... 10 years in seal and seal kit and pump part and engine part business in domestic and Oversea market.2:We are ... , swing motor, travelling motor, main pump, center joint, track adjusting cylinder, gear pump.4:We have more than 13 pcs software ... to check the part no. such as Hitachi, komatsu, Cat, Kobelco, Hyundai, Doosan, Sumitomo ...