Manufacturing: Pipes / Pipe Fittings for Water Supply, Metal-Plastic Composite Pipes / PVC Pipes for Water Supply, Polypropylene Pipes for Water Supply, Pipes / Pipe Fittings for Sewage; Sale: Pipes / Pipe Fittings for Water Supply, Metal-Plastic Composite Pipes / PVC Pipes for Water Supply, Polypropylene Pipes for Water Supply, Pipes / Pipe Fittings for Sewage