OJR

Branching pipes, not of metal; Drain pipes, not of metal; Ducts, not of metal, for ventilating and air-conditioning installations; Gutter pipes, not of metal; Rigid pipes, not of metal, for building; Sewer pipes, not of metal; Water-pipes, not of metal; Wooden pipes; Building materials, namely, plastic pipe supports; Non-metal heating ducts; Water-pipe valves, not of metal or plastic