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Lubricating oils are classified into industrial lubricating oils and automotive lubricating oils based on their applications. Lubricating oil generally consists of two components: base oil and additives. The base oil is the main component of lubricating oil and determines its basic properties ； Additives can compensate for and improve the shortcomings in the properties of the base oil, as well as endow it with new properties; they are an important component of lubricants. As a downstream product of the petroleum industry, lubricating oil is characterized by high technical complexity and a high added value. The level of lubricant consumption in a country reflects that country’s degree of economic development, the quality of equipment control, and production efficiency. 1. The situation of China’s lubricant market 1.1 Development trajectory of the lubricant market: With the advancement of reform and opening up and the rapid growth of industry, the demand for lubricants has increased sharply. The development of China’s lubricants industry has gone through three stages. In the first stage, from 1950 to 1992, there was no substantial improvement in the overall technical level. Industrial lubricants were mainly of the non-recoverable type, while automotive lubricants had not yet met international quality standards; the proportion of automotive lubricants accounted for approximately 40%. The situation in the first phase of China’s lubricant industry is shown in Table 1. In the second phase (1992–2000), the lubricant industry was opened up with virtually no technical or commercial barriers, which led to the entry of international brands that seized the high-end market segments. As a result, these international brands remained in control of these profitable high-end markets, while domestic companies invested heavily in order to compete for market share and secure projects; this generated a large amount of bad debt and exacerbated the chaotic competition among domestic firms, further highlighting the advantageous position of international brands. The technical characteristic of the entire industry is a polarization into two tiers: imported equipment adheres to international product standards, while domestic equipment generally follows lower-standard products. Domestic mid-to-high-end products, represented by so-called small-packaged oils, have an annual consumption of less than 50,000 tons per brand, and these products are mainly of the SE/SF and CC/CD types; vehicle lubricants account for approximately 42% of this total. The situation of China’s lubricant industry in the second phase is shown in Table 2. The third phase (2000–2015) was a period of significant development for this industry in China; this growth was driven firstly by the market opportunities created by the rapid expansion of the national economy, as well as by technological advancements and marketing strategies resulting from competition among both domestic and international brands. Mainstream gasoline engine oils have been upgraded from SE/SF to SL/SM, with some using SN/GF-5. Meanwhile, diesel engine oils have rapidly transitioned from the CD standard that had been in use for decades to the CH-4/CI-4 era; a large proportion now uses CJ-4. The total volume of lubricants used for automobiles has surpassed that used in industrial applications, accounting for approximately 55%. The situation of China’s lubricant industry in the third phase is shown in Table 3. Since 2000, China’s consumption of lubricants has increased by about 70%, with an average annual growth rate of around 6.2%, making it one of the few markets in the world that continues to experience growth. Among them, Jiangsu, Liaoning, Xinjiang, Shandong, and Guangdong were the top five provinces in China in terms of lubricant production in 2011. These five provinces accounted for 61% of the total national market share, while the top ten provinces together accounted for 85% of the national market share, indicating a high degree of regional concentration in the market supply. Entering 2012, the landscape of China’s lubricant market is quietly changing. After more than a decade of rapid growth, the Chinese lubricants industry saw a slowdown in growth rate in 2011. However, although the overall growth rate decelerated, market competition became even fiercer. 1.2 Trends in lubricant demand The global consumption of lubricants is primarily composed of two main factors: one is the demand driven by investments related to urbanization ； The second is demand driven by consumption. In 2008, more than half of the world’s population lived in urban areas, and the diminishing effect resulting from demand driven by urbanization began to become apparent. At the same time, consumption-related demand also stalled due to technological advancements. The combined effect of these two factors is a key reason for the continued decline or stagnation in global demand for lubricants in the future. Furthermore, the shale gas revolution, new energy vehicles, and the development of 3D printing technology will all have a significant impact on the long-term market for lubricants. 1.3 Current Development Status of the Lubricant Market: China’s economy has experienced 30 years of rapid growth, and the future trends of the economy as well as its driving forces are important factors in analyzing industry development and changes in demand. Industry has always been a pillar and engine of China’s economic development, accounting for a large share of GDP. However, due to the relatively slow pace of upgrading in China’s manufacturing sector, the overall trend of industry in the future will be a slight decline, with industries suffering from overcapacity gradually fading away. The service sector is currently in a stage of development parallel to that of the industrial sector, with an accelerating pace of structural transformation and huge potential for growth. In the future, the proportion of the service sector will continue to rise, serving as a leading industry to drive China’s economic growth. At present, China’s automotive industry is developing rapidly and has entered an era of widespread car ownership. The number of civilian vehicles has maintained double-digit growth since 2001; by the end of 2015, China had 170 million vehicles, accounting for about 15% of the world’s total vehicle count. The changes in the number of civilian motor vehicles in China since 2001 [1] are shown in Figure 1. In 2015, China’s automobile sales volume was 24.56 million units, which is 10 times that of 2001; the average annual growth rate during that period was 18%. In the next 2–3 years, the annual growth rate of China’s automobile ownership will continue to remain in the double-digit range. The changes in China’s automobile sales since 2001 are shown in Figure 2. The proportions of industrial oils, commercial vehicle oils, and passenger vehicle oils in the demand for lubricants in 2014 are shown in Figure 3. Figure 4 shows the proportions of the two major groups (Sinopec and CNPC), foreign-owned enterprises, and private enterprises in the market share of various lubricant brands in 2014. From 2001 to 2011, thanks to the rapid development of China’s automotive industry, the consumption of lubricants in the country increased from 3.5 million tons in 2001 to 6.91 million tons in 2011, nearly doubling. From 2012 to 2014, the annual consumption of lubricants remained around 6.8 million tons, while in 2015 it dropped to about 6.3 million tons. The main reasons for the decline in consumption are a slowdown in industrial growth leading to reduced demand, as well as improvements in the quality of oils and longer intervals between oil changes. Changes in China’s lubricant consumption since 2001: The increasing share of automotive lubricants is attributed to the rise in the number of vehicles in emerging economies and the gradual recovery of mature market economies such as the United States ； The main reason for the declining proportion of industrial and process oils is the reduced demand for lubricants resulting from production upgrades and technological advancements. In 2012, automakers such as Ford had already applied 3D printing technology to the manufacturing of certain automotive parts, which began to help these companies reduce costs. In the future, 3D printing technology will be applied more widely in other fields, which will continue to impact the overall demand for process oils. The market forecast for lubricants in China is shown in Table 4. Since the opening of China’s lubricant market in 1992, the competition among private enterprises, the two state-owned groups CNPC and Sinopec, and international companies has been truly intense and fascinating. Amid fierce competition, the Chinese lubricants market has seen significant development. U.S. experience shows that once more than half of the urbanization process is completed, demand for heavy trucks will decline, followed by a decline in the total number of such trucks in use. This trend has already emerged in the Chinese market, with heavy trucks and construction machinery experiencing negative growth, which has led to losses for some OEM companies. This has pushed more OEM companies to enter the automotive after-sales market in order to generate profits by controlling the services market for commercial vehicles and construction machinery. Cooperation between lubricant companies and OEMs in the fields of commercial vehicles and construction machinery is set to become a major trend. The upgrading of the industrial oil industry is progressing at a rapid pace. Whether following the experiences of developed economies in Europe and the United States or complying with the requirements set forth by the National Development and Reform Commission, the concentration level across various sub-sectors of China’s industrial sector will see a significant increase. The low-end market will be forced to exit due to lack of profitability, while high-end demand will naturally prevail and be further strengthened through the implementation of merger and restructuring strategies by industry leaders. In the future, the number of industrial oil customers will decline rapidly, while the demand from individual customers will surge. To better cooperate with these large enterprise groups, lubricant manufacturers must restructure and transform their distribution channels; otherwise, they will struggle to meet the demands of this new era. With potential changes in the external environment, lubricants are about to enter a new era. In the face of these changes, competition among various lubricants brands will not come to an end; however, the simple competitive model has reached its phase. New competition calls for new strategies. To achieve new success, attention must be paid to four aspects: (1) At the macro level, lubricant consumption will shift from rapid growth to a steady decline, in line with changes such as the trend in GDP structure, the transformation in the development models of industrial enterprises, and individuals’ pursuit of energy efficiency. (2) In terms of business models, successful competitors can no longer rely too much on information asymmetry and the premium associated with brand recognition; instead, they must truly create value for customers. (3) In terms of production technology, the fundamental role of base oils has been reaffirmed. A new pattern is gradually emerging, with Group II and III oils taking the lead while Groups I and IV oils serve as supplements. A stable supply and reliable quality are the prerequisites for the development of lubricants. Given the characteristics of machine lubrication, achieving good compatibility with machines through the proper combination of base oils and additives—thereby ensuring low emissions and contributing to energy conservation—will be a key focus of future research and development in lubricant technology. (4) In terms of product structure, automotive oils—particularly those for passenger vehicles—will continue to grow. Meanwhile, industrial oils and oils for commercial vehicles are expected to show a gradual decline. The pursuit of mass-market industrial oils is no longer a mainstream strategy for enhancing profitability; instead, differentiated industrial oil products will be a key factor in elevating a brand’s competitiveness. Oils for electric vehicles, robots, and special bearings will be at the core of market competition. 2 The market situation of lubricant base oils in China 2.1 Demand for base oils in the domestic lubricant market As China’s national economy continues to grow, major global producers of lubricant base oils are competing to make China’s market a key focus for their future development. Currently, the domestic market for lubricant base oils is characterized by competition among foreign multinational companies, the three state-owned enterprises CNPC/SINOPEC/CNOOC, and local private enterprises in this sector, resulting in increasingly fierce competition in the industry. The domestic base oil supply situation from 2005 to 2015 is shown in Table 5. As can be seen from Table 5, the supply of base oils from the two major state-owned group companies is decreasing year by year, while the supply of base oils from imports and other sources is increasing year by year. In the coming years, although China will have many plans to upgrade or bring new base oil production facilities online, the gap between supply and demand for base oils will continue to widen, necessitating imports of base oils to meet this demand; in other words, reliance on imported base oils will keep increasing. The output of base oils in China in recent years, as surveyed by a domestic consulting firm. It is expected that demand for base oils in China will continue to rise in the coming years; by 2017, China’s consumption of base oils will reach 7.4 million tons. The apparent consumption of lubricant base oils in China from 2012 to 2016 is shown in the figure. Due to various factors such as insufficient domestic supply of base oil resources and the needs of foreign blending plants, by 2016 there was still a supply-demand gap of 2.2 million tons for base oils in China, a gap that had to be met through imports. In recent years, China’s import volume of base oils has remained high. From 2006 to 2015, the production of base oils by the two major groups declined from 2.87 million tons to 1.9 million tons, and in 2015 the operating capacity of base oil production facilities was only 45%. In addition to shrinking market demand, the slow improvement in the quality of base oil products, as well as an sales system that is not adapted to market demands, are all major contributing factors. Meanwhile, the volume of imported base oil increased from 1.08 million tons in 2006 to nearly 2.2 million tons in 2015. The main sources of imported base oils in the domestic market currently are Singapore, South Korea, Japan, and Taiwan, China. Singapore accounts for 27% of these imports, thanks in large part to the steady purchases by Shell and Mobil. From a corporate perspective, Shell has replaced Mobil as the largest purchaser of base oils, with annual imports amounting to 256,000 tons. Mobil follows closely behind, with annual imports of 213,000 tons. The companies ranked 3rd to 10th are Dongfang Energy, Sinopec, CNPC, Total, Castrol, Sinochem International, Luluda, and Shengshi Huaqiang, among others. 2.2 The demand for base oils in lubricants In China, the level of fuel economy is far lower than that in Europe and the United States. Emphasizing fuel economy and prolonging oil change intervals will be a key aspect in the quality improvement of lubricants. From GF-2 to GF-5 specifications, fuel economy tests are included. The aim of improving fuel economy is to reduce fuel consumption, which places higher demands on the volatility of the fuel. Generally speaking, base oils with a high viscosity index have low volatility; therefore, to control the volatility of base oils and meet the requirements of current and future specifications, base oils of types II and III with a high viscosity index must be used. As can be seen from the demand for base oil types in lubricant products, products such as CF/CD/SE/SF internal combustion engine oils, marine oils, HM hydraulic oils, and CKC/CKD/CKE/GL-5/GL-4 gear oils primarily require API I and II type base oils. In the field of industrial oils, major lubricant manufacturers in the market are using higher-grade base oils to improve the quality of hydraulic oils, industrial gear oils, turbine oils, and compressor oils. They are also adopting new industry standards or OEM standards, such as those that require products with low pour points and long service life, in order to gain a competitive advantage in terms of product quality. The base oils required for this purpose are mainly of type II and III, as well as synthetic oils. With the upgrading of product specifications, increased product differentiation, and improved performance, the demand for API II, III group base oils and synthetic oils is on the rise. 2.3 Domestic and international production technologies for lubricant base oils: At present, more than three-quarters of China’s base oil production capacity still relies on the traditional \"three-step\" process. In this process, during crude oil refining, light components such as gasoline, kerosene, and diesel are separated through processes like vacuum distillation; thereafter, the vacuum distillate is further refined using methods such as catalytic dewaxing, solvent refining, and clay treatment to produce base oil. Some also employ imported hydrogenation processes; among these, Chevron’s Isodewaxing technology serves as a representative example. The hydrogenation method for producing base oils offers advantages such as good quality, high yield, and great operational flexibility. In particular, its use in producing low-viscosity base oils for formulating lubricants for large-scale applications, as well as API II-type base oils with extremely low CCS viscosity and low volatility, has contributed to the rapid development of hydrogenation-based production technologies. Various oil companies have developed their own hydrogenation processes and put them into industrial use. The catalytic dewaxing technology, which saw widespread industrial application in the 20th century, is being replaced by newer and superior isomerization dewaxing technologies due to inherent technical limitations; it offers advantages only in the processing of feedstocks with low wax content. Currently, the representative heterogeneous dewaxing production technologies mainly include: (1) Chevron’s lubricant heterogeneous dewaxing process (IDW technology) ； (2) ExxonMobil’s selective dewaxing process (MSDW technology) and wax isomerization process (MWI technology) ； (3) Shell’s ultra-high viscosity index production technology (XHVI) ； (4) Mitsubishi Corporation’s “hydrocracking tail oil – solvent dewaxing” process ； (5) SK Corporation’s hydrocracker tail oil isomerization dewaxing technology ； (6) SINOPEC Research Institute of Petroleum Processing’ RTL (hydroprocessing of base oils) technology and RIW (isomerization dewaxing of lubricating oils) technology ； (7) The high-pressure hydrogenation technology used by Karamay Petrochemical Company to produce API II class 150BS bright oil from naphthenic oils. These technologies can be used to produce API II and III group base oils from different raw materials, meeting the requirements for formulating high-quality lubricants. Furthermore, the advancements in GTL (gas-to-liquid) technology over the past 10 years will provide new opportunities for the development of other emerging technologies, such as oil production from biomass or coal. Some countries **such as the United States, Brazil, China, and other Western European nations** possess large amounts of biomass and coal. By utilizing GTL platform technology, it is possible to establish production capabilities for other biofuels and specialty products (such as lubricants, waxes, and olefins) at low investment costs [2]. The viscosity index (VI) of GTL base oils ranges from 140 to 155; for products with the same viscosity grade, they can be compared to Category IV (PAO) oils, whose viscosity index ranges from 120 to 140. The NOACK volatility of GTL base oil (determined by ASTM D5800) is less than 10%, which is significantly lower than that of Group III and Group IV base oils. However, the pour point of GTL base oil is closer to that of Category III oils, which can be addressed by using antifreeze additives. Beneficially, GTL base oil exhibits good compatibility with methylacrylate-based pour point depressants. GTL base oils contain almost no sulfur, nitrogen, or aromatic compounds, have a very narrow hydrocarbon distribution, and exhibit excellent oxidation stability and biodegradability. It can be degraded by microorganisms present in nature such as bacteria, molds (fungi), and algae, and even after being discarded, it can be broken down by environmental microorganisms. In addition to its high quality, GTL base oil also offers good production economics. Some studies indicate that the production cost of GTL in mature markets is comparable to that of Group I, II, and III oils; more importantly, the economics of GTL are better than those of Group III oils with a high viscosity index. GTL base oils can compete with Group III and Group IV (PAO) products in the automotive lubricant market. The performance advantages of GTL base oils over Group III oils are reflected in the following main aspects: (1) They have lower volatility than Group III oils ； (2) Low formulation costs enable it to compete for market share from Category III oils and Category IV (PAO) oils ； (3) GTL base oils offer environmentally friendly solutions for the industrial lubricant market, thanks to their biodegradability and absence of sulfur, nitrogen, and aromatic compounds. The ICISS Middle East Base Oils and Lubricants Conference held on October 12, 2010, noted that, compared to the processing of conventional base oils, the emergence of GTL base oils is expected to bring about changes in the global base oils market. 2.4 Biodegradable Lubricant Materials Biodegradable lubricant materials, also known as environmentally friendly lubricants, are a type of eco-friendly lubricant. Such lubricants can not only meet the operational requirements of mechanical equipment, but also be decomposed by active microorganisms (such as bacteria) into CO₂ and H₂O within a relatively short period of time. The lubricants and their degradation products pose no harm to the ecological environment; or they are acceptable to the environment to a certain extent. The biodegradability of several base oils is shown in Table 7. Mineral-based lubricants have very poor biodegradability in the natural environment; they accumulate there and cause pollution to the ecological environment, leading to a range of environmental problems. According to statistics, 5 million to 10 million tons of petroleum-based chemicals enter the biosphere each year worldwide, severely polluting lands, rivers, and lakes and harming the ecological environment and balance. Studies have shown that plant-based lubricants using synthetic esters and natural vegetable oils as base oils have a biodegradation rate of over 90%, whereas mineral oil-based lubricants are difficult to biodegrade, with most of them having a biodegradation rate of no more than 40%. Due to the good biodegradability of plant oil-based lubricants, demand for them is on the rise worldwide year by year. In Europe, the market share of plant oil-based lubricants in the lubricant market increased from 1% in 1997 to 10% in 2000. Some Nordic countries have **established relevant regulations to restrict the use of certain mineral lubricants, in order to promote the use of environmentally friendly lubricants. Biodegradable lubricants were initially used in oil for outboard two-stroke engines, and later found application in many other industries such as chain saw oil, hydraulic oil, machining lubricants, and lubricants for food processing machinery. Natural vegetable oils and synthetic ester oils possess excellent biodegradability, making them the preferred choices as base oils for biodegradable lubricants. Additionally, other types such as synthetic hydrocarbons and polyols also have potential as base oils for biodegradable lubricants. These types of base oils have been or are undergoing continuous improvement to meet the requirements of mechanical operating conditions and the environment. Currently, research on base oils for biodegradable lubricants at home and abroad focuses mainly on synthetic esters, vegetable oils, and other base oils such as polyalpha-olefins (PAO) and polyglycols. In the field of base oil research, efforts are currently focused on modifying plant oil molecules to improve their antioxidant stability. Vegetable oils contain a large number of unsaturated bonds, especially linoleic or linolenic components with 2–3 double bonds, which results in poor oxidative stability. Currently, the chemical modification method to improve the stability of vegetable oils involves replacing or breaking many of the C═C bonds in the oil, thereby reducing its iodine value and increasing its saturation level. The main chemical methods include hydrogenation, epoxidation, esterification, transesterification, isomerization, etc. Among them, the epoxidation reaction takes place under mild conditions, and the resulting epoxides have high reactivity, which facilitates further modification; it is therefore the method with the greatest potential for application. In recent years, with the development of biotechnology, gene modification techniques can be used to increase the oleic acid content in vegetable oils, thereby enhancing their oxidative stability. The oxidation stability index of genetically modified high-oleic soybean oil is 192 hours, which is much higher than the 7 hours for ordinary soybean oil. After chemical modification and the addition of antioxidants, the oxidation stability index of this soybean oil reaches as high as 500 hours. After testing for 1000 hours using the ASTM D 2271 method, its viscosity changed by only 23%. These advantages of genetically modified soybean oil enable it to withstand high temperatures of 260°C, allowing it to endure more severe conditions during production and expanding its range of applications. Relatively speaking, research on green lubricants in our country started relatively late, and no laws or regulations regarding the use of biodegradable lubricants have been established yet. However, with the increasing emphasis on environmentally friendly lubricants and growing demand for them, institutions such as the Lanzhou Institute of Chemical Physics under the Chinese Academy of Sciences, Shanghai University, the Research Institute of Petrochemical Science, and the College of Logistics Engineering began conducting research in this area starting in the late 1980s. To date, however, there are no green lubricant products that have been put into actual use in China; current research focuses mainly on base oils and additives. Li Jiusong and others from Shanghai Jiao Tong University have conducted extensive research on the modification of rapeseed base oil, finding that it not only possesses excellent lubricating properties but also good antioxidant stability, corrosion resistance, and biodegradability, meeting the requirements for green lubricant base oils. In terms of additive research, institutions such as the School of Logistics Engineering are introducing elements such as N and P into plant oil molecules, or adding traditional N- and P-containing additives to rapeseed oil; this approach has been found to significantly improve the anti-wear and anti-friction properties as well as the biodegradability of the base oil. Judging from the current research landscape, research in this field in China is becoming increasingly active. Today, as environmental protection and sustainable development receive increasing attention, the environmental pollution caused by lubricants has drawn significant attention from some **, and laws have been enacted to address this issue. At the same time, the increasingly severe energy problems also require renewable energy to replace current petroleum products. Therefore, it is imperative to research and develop a biodegradable “green” lubricant that can replace traditional mineral oils. 3 Market Situation of Lubricant Additives in China 3.1 Overview of the Domestic Lubricant Additives Market Currently, the total global production capacity for lubricant additives amounts to approximately 4.5 million tons per year. In terms of supply, the four major additive manufacturers – Lubrizol, Infiniteum, Chevron Oronite, and Afiyon – control around 80% of the world’s additive market share [2]. Their products are mainly composite additives; apart from viscosity index modifiers, they generally do not sell individual additives separately. There are also several smaller additive manufacturers, such as Ciba, Vanderbijl, and Rohm & Haas, which primarily produce individual additives. As the world’s second-largest consumer of lubricants after the United States, China maintains a high rate of growth; its huge potential for lubricant consumption drives the demand for lubricant additives. In the competition of the lubricant additive market, foreign additive companies have seized China’s high-end additive market thanks to their advantages in technology and cost-effectiveness. Through development models such as independent research and development and the introduction of foreign production technologies, the domestic additive industry has now reached a certain scale of production. Although it is on par with foreign products in terms of single-dose varieties, there is still a certain gap in quality ； The development of composite formulae focuses mainly on mid-to-low-end products; high-end composites still rely on imports. Currently, in the domestic market, the actual market share of compound products is largely held by foreign additive companies or their joint ventures in China. The domestic joint ventures are mainly represented by Shanghai Hairun Additive Co., Ltd. and Lanzhou Luborun Lanlian Additive Co., Ltd.; these companies primarily produce compounds for diesel engine oils, and their products are mainly supplied to Chinese lubricant manufacturers that are part of joint ventures. The main domestic manufacturers of composite additives are Liaoning Tianhe Company and Wuxi Southern Additives Company. The rapid improvement in the quality of lubricants is closely linked to the upgrading of China’s heavy chemical industry as well as the fast growth of the automotive industry. Heavy and chemical industries such as petroleum, chemicals, coal, and steel are all moving toward more intensive operations, larger scale, and greater energy efficiency, which imposes new requirements on lubricant suppliers – primarily in terms of energy conservation and environmental protection. The rapid growth of the automotive industry has also brought significant business opportunities to the entire lubricant industry. Over the past 3 years, the mainstream product grades for passenger vehicle lubricants have shifted from SE, SF, SG to SH, SJ, SL, SM, SN, gradually keeping pace with global standards. The improvement in lubricant quality has posed new challenges for research on additive formulations. 3.2 Challenges posed by the need to improve fuel efficiency in additive development: The development of the automotive industry has led to a significant increase in the amount of engine oil used. Meanwhile, the increasing demands for energy conservation and environmental protection require engine oils to have better fuel efficiency, as well as lower levels of sulfur and phosphorus and reduced sulfate ash content. Therefore, additives must meet the requirements of low sulfate ash, low phosphorus, and low sulfur levels. Improving fuel efficiency, extending the oil change interval, and increasing the use of base oils of types II and III place higher demands on additives in terms of energy conservation, environmental protection, as well as antioxidant and anti-corrosion properties. At the same time, since increasing the amount of base oils of types II and III has a significant impact on additive compatibility, the formulations of additives will also undergo substantial adjustments in the future. China accounts for 50% of the Asian engine oil market, and fuel efficiency standards will be the main driving force behind the development of gasoline engine oils, which is expected to accelerate the use of SN/GF-5. In the field of gasoline engine oils, viscosity is moving in the direction of lower values, and the grades of engine oils are continuously improving. In the field of diesel engine oils, as the number of Euro III engines increases, the demand for oils of grades CH-4, CI-4, and CJ-4 will rise rapidly. Over the next 10 years, diesel cars will hold a certain share in the market, and the implementation of Euro III and Euro IV will be the main driving force behind the transformation of HDDEO (heavy-duty diesel engine oil) over the next five years. 3.3 Applications of nanomaterial anti-wear additives As research on nanotechnology and nanomaterials advances, their potential applications in the field of lubrication are also gradually coming to be recognized. In recent years, scholars at home and abroad have conducted extensive research on nano-lubricant additives. Nanoparticle lubricant additives can significantly improve the tribological properties of base oils, offering great prospects for development and application; they have thus become an important direction in the advancement of lubricant materials. In recent years, some domestic and international scholars have used various methods to prepare many nanolubricant materials in order to improve lubrication performance. In the research on nanolubricant materials, the most extensive studies have been conducted on nanometallic copper. Studies have found that nano-copper exhibits good anti-wear and anti-friction properties under various load conditions. Compared with the base lubricant 650SN, the addition of a nanocopper additive reduces the friction factor by 29.1% and the wear diameter of steel balls by 27.4% under a high load of 490N. However, nanoparticles tend to aggregate into larger particles, which affects their stable dispersion in the base oil. The commonly used method at present is to chemically modify the surface of nanoparticles in order to increase their oil solubility. Commonly used surface modifiers include dialkyldithiophosphate (HDDP), oleic acid, diethylhexanoate, stearic acid, alkyl phosphates, and nitrogen-containing organic compounds. Nanoparticles have been studied as lubricant additives abroad for many years, and products based on them are available in the Chinese market, such as JB from the United States, Bilei from Canada, and APOLO from the United States. These products offer advantages such as reducing friction, extending the service life of equipment, lowering noise, and repairing metal surfaces; they are mainly used in transmission systems as well as in instruments and equipment that experience friction and high temperatures. The nanocopper lubricant additive developed by the Lanzhou Institute of Chemical Physics has been applied in the composite formula of the “Kunlun 778” lubricant additive as well as in related high-quality gasoline engine oils. Experiments have shown that adding it at a concentration of 0.1% to high-quality gasoline engine oils can reduce friction by 31%, as well as lower fuel consumption per 100 kilometers by 1.44% to 3.69%. 4 Challenges and Opportunities Facing China’s Lubricant Market As China’s national economy continues to develop at a rapid pace and environmental and energy-saving standards become increasingly stringent, lubricants in China will move toward being more environmentally friendly and energy-efficient. The development of lubricants will exhibit the following characteristics: (1) High-quality lubricants that meet environmental and energy-saving requirements will be the direction of development. To meet the requirements of continuous, automated, and high-precision industrial equipment for reliability and long service life in lubricant products, new generations of efficient lubricants must be continuously developed. (2) The variety of environmentally friendly lubricants is gradually increasing. To meet increasingly stringent environmental regulations, new types of fuels such as LNG/CNG fuel, ethanol-blended gasoline, and biodiesel are beginning to be widely used. To meet the needs of new-type fuel engines, a range of environmentally friendly products has been developed, including high-performance dual-fuel engine oils for natural gas and gasoline, engine oils for ethanol-gasoline blends, and engine oils for biodiesel. (3) The segmentation of product varieties and the differentiation in performance are becoming increasingly evident. With the advancement of technology, devices are becoming more precise and specialized, which makes it necessary to use different types of lubricants to meet their specific requirements. The future opportunities in the global lubricant market will still lie in emerging markets such as China, where competition is set to intensify. The Chinese domestic market is also gradually evolving into a mature market, and the entire industry will develop in the directions of specialization and scale expansion. At the same time, there are new opportunities in many entirely new fields such as shale gas extraction and utilization, electric vehicles, 3D printing, intelligent transportation, and smart manufacturing. Overall, the prolonged economic downturn on the international stage is giving rise to a new technological revolution, which poses new demands on the lubricant industry. Suppliers of lubricant products with high added value, high technical content, and excellent performance, as well as intelligent solutions, will surely occupy a prominent position in the future lubricant market. References: [1] Kong Jinyuan, Wang Zhao, Zhang Lei, et al. Current Status and Development Prospects of China’s Lubricants and Base Oils Market [J]. Lubricants, 2016, 31(5): 2–4. [2] Qian Bozhang. Production and Market of Lubricants and Base Oils [M]. Beijing: Sinopec Press, 114, 171