... ABS, PA, PC, POM, EVA, PMMA recycling and pelletizing 2.high capacity The screws and another consisting parts are designed respectively against ... setMaterial: made of stainless steelScrew structure: specialThe screw and the barrels are all made of high quality nitrified ... steel-38CrMoAIA, and are nitration austerely according to NATIONAL STANDARD, Nitration depth ...