Screw and barrel material selection is strict, wear resistance, high temperature resistance; Unique screw groove design, smooth material transfer without retention. The single screw model is simple and efficient, the cylinder and the screw have a tacit cooperation, and the heating system is uniform, so that the PVC powder is quickly melted and fully plasticized, and the melt is accurately pushed through the mold to shape, ensuring the product density is consistent and the performance is excellent.