Sanyuan Yinda Petroleum Machinery Co., Ltd., since 1993, covers an area of 15000 square meters, with fixed assets of 30 million,is a professional manufacturer of mud pump parts, integrating research, manufacturing and trade together. The main products of our company are ceramic cylinder liner, bi-metal mud pump cylinder liner, valve assembly,piston assembly, hydraulic cylinder, rod and other mud pump parts. Our company can also manufacture various special and nonstandard mud pump parts as our customer required, and got the first class supplier qualification of BOMCO, CNPC and Sinopec. Our...