... manufacturer of brass valve parts, CNC machined parts and precision turned Sand Casting Part1.Product Introduction(1) Sand Casting Part(2) OEM ... CO., Ltd.(2) Main products: CNC machining precision parts: valve accessory, brass tube fittings, elbow, tee, nut; Auto ... inspection devices: digital projector, Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge ...