The Hengyuan main business Carter, Komatsu, Hitachi, Hyundai, Kobelco, Volvo, Sumitomo, Doosan (Daewoo), Kato, Ishikawajima domestic and Sunward, Yuchai, Trinity, Xiamen Engineering, Liugong excavator parts , bulldozer parts, loader accessories imported engine parts: the cab, the cab door assembly, cab windscreen, cab sunroof, the cab door locks, control valve, the computer version, generators, rotary support, fuel tank assembly, chain, chain plates, bucket, internal and external wire-speed travel motor accessories, to start the motor, the pilot pump, pump, fuel injector, the instrument panel, the planetary gear, Samsung teeth, supporting wheels, hydraulic pump parts, machine pumps, water tanks, air conditioning compressor is made difficult, the Company's price to a minimum.