polyethylene blown film machin... 1.High&Low-pressure blowing film 2.plastic films like :LDPE.HDPE.LLDPE USE Its extruder ,cylinder and screw rods are made of quality 38 chrome-molybdemum aluminumthat have been nitrized and processed in a precision way.Hence it is sound in hardness,durable in corrosion resistance,the specially-designed screw is of sound quality in plasticizing,which helps ...