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On November 1, 2007, the \"high and low pressure diaphragm pumps for large-scale coal chemical water-coal slurry\" developed by Shenyang Metallurgical Machinery Co., Ltd. of China Nonferrous Metals Group (hereinafter referred to as CNMMC Shenyang Machinery) passed a technical appraisal in Nanjing. Coal chemical industry is a key area for development in the **medium- to long-term science and technology development plans as well as in the \"Several Guidelines of the State Council on Accelerating the Revitalization of the Equipment Manufacturing Industry\". Coal chemical engineering includes three methods: gasification, coking, and liquefaction. Coking causes severe pollution, liquefaction has high requirements for coal types, and the slurry method used in gasification – namely the Texaco water-coal slurry gasification process – holds the greatest potential for development. The slurry diaphragm pump is one of the key devices in coal chemical industry, involving high technical challenges, and has long relied on imports. It is predicted that by 2020, 2,000 Texaco gasifiers of various specifications will be added across the country, requiring 2,000 high-pressure pumps and 4,000 low-pressure pumps. Building on the development of the first generation of high-pressure coal slurry diaphragm pumps, CNMC Shenji Company utilized modern CAE technology to establish a technological innovation system with independent intellectual property rights. It developed its own series of high-pressure and low-pressure coal slurry pumps that meet international advanced standards, and secured 5 **patents for these innovations. It is characterized by advanced design, rational structure, and mature and reliable manufacturing processes. The matching techniques for its overall technical parameters, rubber diaphragm technology, heavy-duty crankshaft design, magnetic signal sensor detection technology, automated control technology, and high-pressure sealing technology all represent technological innovations. These innovations address the key technical challenges related to high continuous operation under harsh working conditions, and this product fills a gap in the domestic market. The diaphragm pump developed by Sinosteel Shenji is used in the large-scale fertilizer production facility of Sinopec Nanhua Company; this facility has a daily coal consumption of 1,500 tons, with a gasification pressure of 8.5 MPa. It represents the highest gasification pressure available in the world today, and it is also the only Texaco-type gasification unit of its kind that is in industrial operation. Its technical level is at the forefront of international advancements. Among them, the design and manufacturing of the low-pressure coal slurry pump for the raw material structure adjustment project was undertaken by CSSC Shenji Company. By October 2007, the two low-pressure coal slurry pumps had completed 20 months of industrial operation testing ； A high-pressure coal slurry pump has successfully completed 4,500 hours of operation across three full industrial cycles, and it is currently undergoing its fourth industrial cycle. The successful operation of the first diaphragm pump fills a gap in China, indicating that the country’s technology for high and low pressure coal slurry pumps has reached international advanced levels. This is of great significance for the development of coal chemical industry in China as well as for advancing the technology in equipment manufacturing. In addition, the diaphragm pump series developed by Sinosteel Shenji Company using its core technologies of independent innovation also have a broad market in fields such as metallurgy, mining, non-ferrous metals, chemicals, building materials, coal, power generation, and environmental protection; the demand for these products can reach 6-7 billion yuan, and there is also huge demand in the international market. To date, Zhongse Shenji has produced over 200 sets of equipment, generating an output value of 759 million yuan. In 2006, the order value for diaphragm pumps was 270 million yuan; from January to October 2007, it was 350 million yuan, yielding significant economic and social benefits.