Taiwan standard air valve,precision mold part: 1.Mat: Sus420; Hardness:48 2.Type:8mm,10mm,12mm,16mm ... Good factory price Taiwan standard air valve,precision mold part:This type of air poppet valve,high precision,easy ... high precision and space saver; 3. Using air valves to control the operation and the final ... products can leave the mold instantly;4.Air poppet valves are made from stainess steels ...