chemical products for industry, namely, synthetic graphite used in the manufacture of alkaline batteries and lubricants

mineral coloring agents, namely, white pigments and colored pigments

metal construction materials, namely, structural tubing; metal pipes, namely, high precision mechanical tubing, dom tubing and seamless tubing, and small diameter tubing; metal wires and cables, namely, bimetallic wires and strips; mineral ores, namely, refractory minerals, calcined clay, white clay, and andalusites, bauxite, fused silica; fused, tabular and calcined alumina; and natural graphite

non-metal construction materials, namely, clay roof tiles and accessories therefor, clay chimney blocks, clay bricks for walls and partitions, and natural slates