PE-AL-PE composite pipes core consists of aluminum with an inner and outer plastic layer, it's tightly bonded with a special adhesive to the aluminum core and all the layers are extruded in one step. Ginde PE-AL-PE composite pipes have all the advantages of both metal and plastic pipes.

All of the PAP production lines are imported from the German UNICOR company and GPPIG implement the "one step five layer extrusion method", using the ultrasonic over lap welding technique. The raw materials are imported from famous European and American companies, the main suppliers are the American DOWLEX Chemical Company, the American PHILIPS Company, the German POLYPLAST Company and the Dutch DSM Company.