U-PVC double pipe and trunking production line 1, turn-key service 2 ... , long term after-service 3, this is one of our main prod U-PVC double pipe ... ,PP,PC,PS and etc rigid pipe .trunking production line/pvc trunkingThis unit mainly includes accurate extruder ... length can be set at random .trunking production line/pvc trunking main technical parameterLength of vacuum ...