Non-metallic building materials; Rigid non-metallic pipes for building (other than parts of sanitary installations); Non-metallic rigid pipes; Non-metallic conduits for water discharge; Non-metallic conduits for water distribution; Non-metallic waterproofing membranes; Non-metallic sub soil drain sheets for preventing water infiltration; Non-metallic water fittings incorporating flow control (parts for water pipes); Non-metallic waterproofing materials (not in the nature of paint); Potable water reservoirs of non-metallic materials; Preparations for use as waterproofing coatings on the surfaces of structures (other than paints); Sealing materials (other than chemical) for porous soil; Sealing materials (other than chemical) for water permeable garbage disposal sites; Sealing materials (other than chemical) for water permeable soil; Water-pipes, not of metal; Waterproof membranes for use as ground liners for lakes; Waterproof membranes for use as ground liners for landfill sites; Waterproof membranes for use as ground liners for ponds

Plastic water tanks; Water storage tanks of plastic; Rainwater tanks of plastic; Plastic valves for water pipes; Water reservoirs of plastic