Our company is a manufacturer of PISTON RING in china. Founded formerly as a state owned factory, we began with production of casting blank of piston ring since 1970 Along with customer's requests, our production line has been multiplied and products range are widely increased. So far we have the full professional processing for PISTON RING from material analysis, pig iron source, casting technique, finish machining,electrolytic treatment, packing and shipping methods to serve for our world wide customers.We have certification of ISO9001. We can guarantee our products quality. we sell well in more than 40 countries. We supply piston rings with some large and famous companies in the field. With our experienced technicians. we can make customer OEM rings as your drawing or sample. We are member of engine parts association , so we have many OEM or big cooperative factories. we can get parts at factory prices. Sometimes, our prices are lower than factory prices.