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The comprehensive properties of polyurethane elastomers are highly excellent. In recent years, countries have been intensifying their research on application development in line with market demands, with the focus on the following areas: 1. Polyurethane elastomers for use in automobiles. The current automotive industry is moving toward higher performance, lower weight, as well as improved comfort and safety. Rubber-plastic composite materials are gradually replacing metal materials, which opens up extremely broad prospects for the application of polyurethane elastomers. The American company Goodrich has developed a second-generation TPU, commercially known as Estaloc. This product retains the properties of the first-generation TPU Estaloc, and uses hollow glass balls as fillers, which increases its gloss by over 15%; it can be used to manufacture automotive side panels and shock absorbers. Installing airbags in cars is a requirement of the development of the modern automotive industry, and it plays a crucial role in protecting the lives of drivers. Such airbags must possess sufficient strength to withstand high-speed impacts, as well as good flexibility at low temperatures; they are well-suited to be made of polyurethane, with approximately 300 grams of adhesive being used per airbag. Most cars in our country still do not have airbags, so there is a large demand in the market. Take advantage of the high strength and high load-bearing capacity of polyurethane elastomers. Tires for medium and low-speed heavy-duty vehicles can be manufactured, offering high strength and load-bearing capacity; these tires have a load-bearing capacity 7 times that of tires of the same specification made from natural rubber. In recent years, a new type of green polyurethane composite tire has been under development. It uses new and used rubber carcasses as the base, with a high-wear-resistant and puncture-resistant polyurethane rubber tread layer poured over them. It is currently in the stage of mileage testing, and production is expected to begin in the near future. 2 Polyurethane elastomers for construction: Traditional asphalt felt waterproofing materials have gradually been replaced by durable, monolithic polyurethane waterproofing materials ； Ten years ago, polyurethane paving materials were used only in **-grade official competition venues for sports fields; nowadays, however, polyurethane plastic running tracks are installed in stadiums in most provinces and cities, as well as in colleges and universities, and even in some primary and secondary schools ； Expansion joints in large bridges, seams in airport runways and highways are also beginning to use room-temperature curing polyester elastomers. Polyester elastomers are an ideal material for sleepers in high-speed railways; the sleepers used in the tunnels and bridges along Japan’s Shinkansen lines are made of this material. This new application makes full use of the lightweight, shock-absorbing, and aging-resistant properties of polychloroelastic materials, making it highly suitable for widespread adoption. 3 Polychloride elastomers for mines: Coal mines, as well as metal and non-metal mines, have a high demand for non-metallic materials that are highly wear-resistant, strong, and elastic. Over the past 10 years, many coal plants have replaced bulky metal screening plates with polyester elastic screening plates; this not only **extends the service life of the screening plates but also significantly reduces noise in the operating environment, resulting in notable energy savings and reduced consumption. Other items such as cyclones used for solid separation, flame-retardant and antistatic wear-resistant conveyor belts, solid wheels for mining monorail cranes, bonding plates for coal mine shotcreting machines, oil seals on 10,000-ton electric wheel dump trucks, and cold repair compounds for high-voltage cable sheaths have also played a significant role in mine construction. There are still many wear-resistant elastic products for use in mines that await our development and promotion. 4. Polychloroethylene elastomers for shoes: Since Taiwanese manufacturers have flocked to the mainland, China’s shoe-making industry has developed rapidly. Polyester elastomers possess advantages such as excellent cushioning properties, light weight, wear resistance, and anti-slip characteristics. They have now become an important material used in the shoe manufacturing industry. Important components of various shoes, including golf shoes, baseball shoes, soccer shoes, skiing shoes, walking shoes, and safety shoes, such as soles, heels, toes, and insoles, are made from polyester elastomers. These materials not only look good but are also comfortable and durable, while also helping to improve athletic performance. The good biocompatibility and hemocompatibility of medical polyurethane elastomers, along with the absence of various additives, are key reasons why TPU and CPU materials are used in the medical field. Medically elastic products that have been successfully developed include tracheal tubes, prosthetics, occlusive agents for family planning, materials for repairing cranial defects, condoms, and so on. Their application prospects in the healthcare field are still very broad. 6 New types of polyurethane composite panels: The UK is developing a polyurethane composite panel system called the SPS plywood layer system, which is set to bring about a revolution in the shipbuilding industry. It consists of two layers of 9mm thick steel plates, with a 40mm thick polyurethane elastomer injected between them. Once developed successfully, it can replace the traditional reinforcing steel plate materials used in the shipbuilding industry. Its advantages include reduced manufacturing time, lower costs for steel plates, less weight of the ship’s hull, impact resistance, fatigue resistance, shock absorption, noise reduction, and thermal insulation. Once composite materials using SPS systems are adopted for shipbuilding in the future, the amount of polyurethane elastomer used in the shipbuilding industry will be an astonishing figure.