Chang Sha Jin Cheng High Tech Machinery Co., Ltd is one of the largest professional mechanical construction enterprises in China. Our company is specialized in producing, developing, and selling the excavator electric and hydraulic parts, such as controller, monitor, throttle motor assembly, solenoid valve, hydraulic valve, sensors, switches, for numerous brands of excavators(komatsu,caterpillar,hitachi,kobelco,sumitomo,daewoo,kato).