... 1. High speed tool steel W6Mo5Cr4V22. Nitrided steel 38CrMoAlA3. Cr12MoVScrew process technology:Boring--heat treatment-- face ... PE peroxide,silicon alkyl crossing cablesSpecial materialsEVA heat-melting glue,polyurethane,fluorin rubber,fluorin plastics, ... and TPR sole materialReaction extrudingPolyamide condensate,polyamide melting polymerization,polyamide polyethrne-adding,polycarbonate condensate, ...