... Product Introduction (1) Brass Vavle, Throughway Vavle, "L" type pilot valve, and so on. (2) OEM Service based on drawings ... products: fasteners: bolts, nuts, washers; CNC machining precision parts: valve accessory, brass tube fittings, elbow, tee, nut; Auto-lathe ... inspection devices: digital projector, Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge ...