Rizhao Shuanggang Electron And Machinery Co., Ltd. is a professional and famous company of gas engine pistons and subassemblies, equipped with various modern fittings and production equipment. Our company has a capital asset of RMB 320 million. We produce 5,000,000 various types of pistons, 100,000 sets of combination units, and 20,000 sets of numerical control machines each year. Our products sell well in Europe and America, and we provide fittings for national-wide famous companies such as Beiqi Fonton, FAW Wuxi Diesel Engine Works, Jianghuai Engine, Weifang Engine, and Anhui Quanchai. Since establishment, we have stuck to the guideline of "achieving the perfection by innovation of technique". We have passed the authentications of ISO9001, ISO1400, ISO/TS 16949 Quality Management System. Shuanggang brand was awarded as "Shandong Famous Brand Name" in 2005.