... calcium plate, 50-400high calcium pipe, 50-300 high calcium profile, soft PVC sheet, XPS-PVC etc; PP.PE.ABS.PVC ... .pelletzing, pipe, profile, sheet, etc. Raw MaterialThe Finished Product Processing Requirments38CrMoAlA, SACM645Nitriding TreatmentCr12MoV ... hard after high temperature Bimetallic Conical Twin Screw&Barrel for Profile(WPC) Extrusion