To produce, manufacture, refine, prepare, process, purchase, sell, import, export or generally deal in bricks, sand, stone, marble, tiles, refractories, china wares, sanitary materials, pipes, tubes, tubular structures, cement, paints, adhesive, sheets, roofing, glass, furniture, fittings, electrical goods, water supply or storage equipment, floor polish, door closures, concrete mixtures, elevators, paints, hardware, pipe, fittings, lubricant oils, building materials, forest products and any other building or decorative materials made of cement, stone, timber, teak, board, fiber, paper, glass, rubber, plastic or other natural or synthetic substance or chemical.