Hangzhou Yanmar Electrical Equipment Co., Ltd. has been specialized in excavator parts,the parts are for KOMASTU HITACHI KOBELCO SUMITOMO CATTERPILLAR KATO DAEWOO HYUNDAI and so on . excavator gears,ecvavator travel motor bearings,swing gear reducers, travle motor (final drive)assy ,swing motor assy, the best sell is the final drive without motor (gear box ) and swing motor with motor . the gear are the quality is the most best in china , almost like the original one .the controller and monitor set , and the valves like mian and service valve ,the starting motor and alternator for excavator,...