... .2) The set is composed of conical twin-screw extruder, vacuum cablibrating tank, haull-off, cutter, stacker or belling machine etc ... -off machine adopt the imported AC frequency control device.The vacuum pump and hauling motor employ superior goods.4) Haul-off machine ... .Twin-tube Moulds(Φ16mm,Φ20mm,Φ25mm,Φ32mm, Φ40mm)One set3.Vacuum calibrating and Cooling TankOne set4.Haul-off Unit and Cutter ...