Piping systems comprised of non-metal material, namely, tubing, pipes, sprinklers, regulators and plastic fittings namely, pipe connectors, pipe hose couplings and pipe elbows, conduit, connectors, couplings, elbows and clamps
Environmental Control Apparatusproducts comprised of semifinished plastic materials and polyesters, namely, tubing, drain pipes, conduit and flexible non-metallic hoses
Rubber Goodsnonmetal construction materials, namely, concrete pipes and cement pipes
Nonmetallic Building Materials