As one of the major piston ring enterprises in China, Jiangsu Yizheng Wellong Piston Ring Co., Ltd. has an almost 30-year history of manufacturing various types of professional piston rings with the annual output of 50 million pieces of piston rings and 10 million pieces of valve seats.
　　 Wellong piston rings are supplied to over 30 large engine producers, and many replacements and parts markets in China , and exported to 18 countries in Europe, Africa, America, Southeast Asia, and Middle East.
　　 Wellong piston rings with advanced technology and the highest quality at competitive pricing are made for cars, mini-bars, motorcycles, heavy-, middle-, light-duty trucks, construction machinery, diesel locomotives, air compressors, brake pumps, agricultural diesel engines, and agricultural transport carts applications with more than 1,000 specifications.
　　Wellong is technically advanced in piston ring design, manufacturing and detection technologies, such as material technology, ...[More]a sprayed molybdenum technology, and laser ceramic metal technology to guarantee the requirements of engine producers for new products development. Wellong’s research & development center provides technical assistances to meet different requirements of users.
　　 Wellong imports key production & check plants from Japan, Germany, the United States, and UK, holding lead in the trade in casting, heat treatment, surface treatment, processing equipment, check & detection methods, and technological level.
　　Wellong has built up a CAD center, a LAN and an ERP system, and been certified to ISO9001 、ISO/TS16949 Quality Assurance System and ISO14001 Environmental System Certification. Wellong is entitled “ A Hi-tech Enterprise of Jiangsu Province”, “A Grade AAA Enterprise Obeying Contract and Keeping Promise of Jiangsu Province”, “ An Outstanding Enterprise in Terms of Environmental Protection of Jiangsu Province”, and “ An Outstanding Technologically Innovative Enterprise ( Private) In China”. "WELLONG" trademark has been “A Famous Trademark of Jiangsu Province” many times.