The consistency and reliability of Shuanggang products are advantageous over other piston manufacturers by our vast experience in the automation of smelting, casting, heat treatment, machining, inspection, surface treatment and cleaning processes. In the meanwhile, Shuanggang has been certified by ISO9001, ISO9000, ISO/TS16949:2009 quality systems, and ISO14001, OHSAS18001 health and environmental system, which together allows our products and services to definitely reach, and frequently exceed, the expectations from our client.