1,hydraulic pump chair parts 2,ISO Certificated 3,Tolerance:0.005~0.02mm 4,Capacity:0.5~1020mm ... 5,Delivery:on time China supply OEM service high precision hydraulic pump ... , Anodization, Chemical fim, Powder, Passivation, Sand blasting, Brushing & ploshing etc.3) Processing equipments:CNC machining center, CNC lathe, grinding machine, automatic ...