China HL-Seal Co., ltd(*****) is a engineer machine offer company. China HL-Seal Co., ltd. is a engineer machine offer company. We are in development, produce, sale and serice.We are line in construction machine repair and spare part. expencially in the all kinds of hydraulic cylinder kits. Boom Arm Bucket , Pump, Swing Moto, Travel Motor, Adjuster cylinder seal kit, Control Valve cylinder seal kit, Hammer seal kit, Dozer and wheel loader cylinder seal kit, O-ring, Transmission cylinder seal kit ..... on the Komatsu , Hitachi, Caterpillar, Daewoo, Hyundai, Volvo, KATO, Kobelco, JCB ... *****