General items: Metal ore sales; Sales of non-ferrous metal alloys; Lime and gypsum manufacturing; Lime and gypsum sales; Metal surface treatment and heat treatment processing; Manufacturing of eco-environmental materials; Manufacture of specialty chemical products (excluding hazardous chemicals); Sales of special chemical products (excluding hazardous chemicals); Sales of non-metallic minerals and products; Manufacturing of non-metallic mineral products; Sales of ecological and environmental materials; Non-ferrous metal casting; Non-ferrous metal alloy manufacturing; Sales of metal materials; Sales of building materials; Processing of metal scrap and chips; Processing of non-metallic scrap and debris; Retail of hardware products; Wholesale of hardware products; Sales of renewable resources; Wire and cable business; Sales of insulation materials; Sales of refractory materials; Sales of metallurgical special equipment; Sales of special equipment for environmental protection; Sales of electrical equipment; Instrumentation sales; Sales of plastic products; Sales of rubber products; Sales of chemical products (excluding licensed chemical products); Loading, unloading and handling; Import and export of goods; Technology import and export