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Profile: Qingdao Royal Machinery Co. Ltd. manufactures plastic processing and injection molding machine. Our products include strap band production line, blowing machine, plastic auxillary equipment, plastic profiles extrusion, plastic palletizing line, pipe extrusion line and plastic plate extrusion line. We offer PE/PVC single wall corrugation pipe production line, PE carbon spiral reinforcing pipe production line, PVC fiber enhancing soft pipe production line, large diameter (HDPE/MDPE) gas/water supply, PE heat preservation pipe production line, steel wire reinforcing all-purpose plastic pipe production line and SJ series single rod extruder profiles extrusion line.