... 5. Certificate of Origin 1. PVC plastic pipe machine: 2. PVC pipe machine characteristics:1) The set is composed of conical ... haull-off, cutter, stacker or belling machine etc.2) The extruder and haul-off machine adopt the imported AC frequency control device ... pump and hauling motor employ superior goods.3) Haul-off machine of different specifications, such as two caterpillars, three caterpillars, ...