SPRING COIL 1.High quality foot brake valve,hand brake valve, ... /TS 16949 3).Good process flow and cost effectiveMaterial: Aluminum Alloy, Zinc Alloy, NylonMachining: CNC machining centerInspection : 100% leakage test and other ... Valve, Quick Release Valve, Drain Valve, Governor Valves, Air Dryer,SPRING COIL Application: SINO TRUCK,FAW,FOTON,JAC TRUCKWe also develop ...