1.grey iron, ductile iron, iron alloy 2.hardness: 140HB-260HB 3.competitive ... people, annual production more than 15 thousand tons, with ISO90000:20000 certification,, products exported to France ,Germany ... . More than 40 machining equipments, more than 10 type of testing equipments (include SPECTROMAXX). The ... field: valve, fairlead, gear wheel and piston;2. Machine tool parts: sea saw, guiding rail, ...