CYM was established in 1956 and is a wholly-owned subsidiary of CSSC. Specializing in the design and production of marine diesel engine bearings and bushings, intake and exhaust valves and valve seats, water and oil pumps, and camshafts. Designated supplier of MAN and Wärtsilä, excellent supplier of GE, strategic partner of CATERPILLAR. It is OEM for MAN, Daihatsu and Yanmar etc. engine makers in China.