2 Flat, 3 Flat, 4 Flat, 5 Flat Prestressed Plastic Flat Corrugated Tube Line Tangshan Longwei Trading Co., Ltd. Base Info Description Pre：PP PE PVC Single Wall Corrugated Pipe Machine Next：2 Flat, 3 Flat, 4 Flat, 5 Flat Prestressed Plastic Flat Corrugated Pipe Machine
