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In 2015, Asimco Shuanghuan online store was launched.
In 2015, Asimco Shuanghuan made progress in expanding large-bore piston ring clients, and was accredited by 3 international clients.
In 2015, Asimco Shuanghuan successfully developed new PVD low friction coating, equipment and technology, and launched the products into the market.
In 2015, Asimco Shuanghuan developed and implemented Manufacturing Execution System (MES).

In 2014, Asimco Shuanghuan’s chromium-based composite plating piston ring automatic production line was built and put into production.
In 2014, Asimco Shuanghuan has built Yuchai lean production line, which promoted the production efficiency up to 8% and reduced the production cost up to 2.7 million yuan.
In 2014, Asimco Shuanghuan built the supporting cooperation relationship with Dongfeng Commins, Foton Commins, Guangxi Commins, Chongqing Commins and Xi'an Commins, and was awarded the qualified supplier by Chongqing Commins.
In 2013, Asimco Shuanghuan built the joint venture Yizheng Rihuan Asimco Powder Metallurgy Manufacturing Co., Ltd. with Japan NPR.
In 2013, Yizheng Asimco Shuanghuan Piston Ring Co., Ltd. completed the acquisition of ASM Alloy Material (Yizheng) Co., Ltd. (“Asimco ASM” for short).
In 2013, the company was renamed Yizheng Asimco Shuanghuan Piston Ring Co., Ltd.
In 2012, the company obtained 5 national patents again. “Chromium-based diamond composite plating chromium coating piston ring and processing method” was awarded national patent for invention. 4 piston ring products, such as “piston ring with non-stick coating” and “piston ring with solid lubrication coating”, were awarded national patents for utility model.
In 2012, the company invested more than 20 million yuan into internationally-advanced 22-station piston ring composite plating flexible production line, and replaced traditional 2-axle travelling system into 7-axle robot travelling system, which greatly shortened the travelling time and promoted the production efficiency up to 30%.
In 2011, “Shuanghuan” brand won good reputation: “Key Internationally-famous Brand Cultivated and Developed by Jiangsu Province” rated by Department of Commerce of Jiangsu Province; Customer-satisfied Internal Combustion Engine Parts Top 10 Brands jointly rated by China Internal Combustion Engine Industry Association (CICEIA), etc.
In 2011, the company built “Enterprise Academician Workstation”. In high-end piston ring technology and new product development, the company cooperated with XUE Qunji (academician of Chinese Academy of Engineering, committee chairman of State Key Laboratory of Solid Lubrication of The Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences) and his scientific research team to enhance corporate R&D ability.
In 2010, the company was awarded 2010 Most Competitive Auto Parts Top 100, Engine Parts Top 10 Enterprises, China Internal Combustion Engines Parts Industry Leading Enterprise, China Machinery Top 500, National Top 100 Excellent Auto Parts Suppliers, etc.
In 2010, the company was awarded Yangzhou Mayor Quality Award, the highest award in the operating management set by Yangzhou municipal government. So far, only 2 enterprises were awarded such honor.
In 2009, the company was awarded “China Auto Parts Piston Ring Industry Leading Enterprise” by China Association of Automobile Manufacturers.
In 2008, “Shuanghuan” trademark was rated as Famous Trademark of China, and “CYPR” trademark as Famous Trademark of Jiangsu Province.
In 2007, the chromium-based ceramic composite plating piston ring was awarded China Machinery Industry Science and Technology Third Award; chromium-based ceramic composite plating technology and piston ring was awarded China International Patent & Brand Expo Grand Gold Medal.
On 18th March 2006, the company held the celebration of “The 30th Anniversary of Yizheng Piston Ring Factory, the 10th Anniversary of Yizheng Shuanghuan Piston Ring Co., Ltd.”
In 2005, the company completed the work handover of new and old general managers, with WU Yingxue acting as the general manager of Shuanghuan.
In March 2004, Jiangsu University - Yizheng Shuanghuan Piston Ring Research Institute was established.
In January 2004, Yizheng Asimco Foundry Co., Ltd. was established.
In 2003, corporate technical center was rated as the provincial enterprise technology center.
In 2003, Yizheng Shuanghuan-Southeast University Piston Ring Technology Research Institute was established.
In 2003, the sales revenue of Yizheng Shuanghuan Piston Ring Co., Ltd. exceeded 300 million yuan.
In 2001, Yizheng Liufang Metal Ceramic Co., Ltd. was established.
In 1998, Yizheng Shuanghuan Piston Ring Co., Ltd. cooperated with Japan NPR to introduce S-shaped steel strip combined oil ring and steel ring production technology and production line.
In 1995, Yizheng Piston Ring Factory and American Asimco Technologies Limited established the joint venture Yizheng Shuanghuan Piston Ring Co., Ltd.
In 1992, the sales revenue of Yizheng Piston Ring factory piston ring reached 100 million firstly.
In 1987, the production and output volume of the piston rings of Yizheng Piston Ring Factory ranked first domestically.
In 1976, Yizheng Piston Ring Factory was established.
In 1968, produced the piston rings.