Unprocessed plastics, industrial chemicals with a base of plastics, including polyolefins; polymer compounds, namely, polymer compositions used in the manufacture of commercial and industrial goods; ready-to-use mixtures of polymers and additives, namely, polymer base compositions used in the manufacture of commercial, industrial and domestic goods; polymer blends consisting of mixtures of one or more polymers or copolymers, namely, polymer compositions used in the manufacture of commercial and industrial goods

Residential ventilation systems comprised primarily of ventilating exhaust fans, grilles for ventilation fans and air filters; air filters for domestic use and for industrial installations, air outlets in the nature of air diffusers for ventilation systems; water pipes, fittings, reducers, and elbows being parts of sanitary installations, plumbing fittings, namely, tees, reducers, and elbows being parts of drinking water installations; regulating accessories for water pipes, water supply systems comprised primarily of flexible pipes, fittings, reducers, and elbows being parts of sink, shower and bath plumbing installations, water distribution installations, namely, water purification installations

Sealing and insulating materials, packing and insulating material, semi-finished articles of plastics, namely, semi-finished injection molded products of plastic for use in a variety of industries; extruded plastic in the form of bars, blocks, pellets, sheets, rods, extruded profiles and tubes for use in manufacturing, flexible pipes, not of metal; plastic junctions for pipes; plastic sewer pipe fittings; non-metal seals for drainage pipe connections; joint packing for drainage pipes; plastic pipe fittings for drainage pipes; plastic fittings for pipes, non-metal fittings for pipes, namely, plastic crossover distributors for pipes; all the aforesaid goods of plastic; plastic in bars, blocks, pellets, rods, sheets and tubes for use in further manufacture for general industrial use; conduits for sanitary installations, namely, plastic conduit for plumbing use

Building materials, namely, plastic pipe supports; water supply systems comprised primarily of non-metal water pipes, fittings, reducers, and elbows; plastic sewage pipes, plastic sewer pipes

Planning and design of domestic installations, namely, waste water installations and drinking water installations