... manufactuer: many kinds of excavator spare parts for different brands: KOMATSU, KOBELCO,CATERPILLAR, HITACHI, SUMITOMO, KATO, DAEWOO, HYUNDAI, ... , and provide professional information and service.2.Business scope: Komatsu, Kobelco, Hitachi, Sumitomo, Kato, Volvo, Daewoo, Hyundai ... crankshaft, camshaft, cylinder seal kit, separate seal, O-ring box, NOK, WYS, Hallite, YBS rod seal, Korean hydraulic ...