TOP AQUA multilayer pipe is a five-layer composite pipe which combines the advantages of metal and plastic pipe and eliminates the disadvantages of both materials. The aluminum layer can prevent oxygen/gas from permeating into pipe. The PAP pipe can compensate and reduce snap-back force and heat expansion with changes of temperature. With better performance in corrosion resistance and installation, PAP pipe is widely used for plumbing, heating and gas transportation systems in European, American, Australian and other markets. We also can manufacture the PEX pipe with EVOH and Anti-UV.