mold standard component,Air poppet valve: 1.Mat: Sus420; Hardness:48 2. ... 10mm,12mm,16mm,20mm 3.Good factory price mold standard component,Air poppet valve:This type of air poppet valve,high ... save space, also can exert very good function,plastic mould part.1. Its use in vacuumed condition in the deep and ... the problems for molds design and injection troubles.: mold standard component,Precision mold part