It’s an extruder, both the cylinder and screw rods are made of high quality alloy steel,which have been azotized and processed in a precision way. Hence it is sound in
hardness, durable in corrosion resistance. The specially-designed screw is sound quality in plasticizing, which helps increase the production
capacity. It is applied to blowing the plastic films like low high  density polyethylene (LHDPE) and linear low density polyethylene (HDPE) films, etc. It is widely applied to
 producing the packaging bags for food stuff, clothing, rubbish bag and vest ones in both civilian and industrial packaging.