Gas operation [branch operation]; hazardous chemicals operation [branch operation]; refined oil wholesale (limited to hazardous chemicals) [branch operation]; grain purchase. . General items: sales of construction steel products; sales of high-quality special steel materials; sales of metal structures; loading and unloading; information consulting services (excluding licensing information consulting services); domestic cargo transportation agency; land international cargo transportation agency; sales of knitted textiles and raw materials; industrial textiles Sales of finished products; sales of knitted textiles; wholesale of clothing and apparel; retail of clothing and apparel; wholesale of shoes and hats; retail of shoes and hats; sales of daily necessities; wholesale of hardware products; retail of hardware products; sales of chemical products (excluding licensed chemical products); sales of building materials; sales of metal ores; sales of non-metallic minerals and Sales of products; sales of metal materials; sales of metal products; sales of metal chains and other metal products; sales of non-ferrous metal alloys; sales of high-performance non-ferrous metals and alloy materials; sales of machinery and equipment; sales of electrical machinery and equipment; sales of electronic products; retail of arts and crafts and collectibles (except ivory and its products); wholesale of arts and crafts and collectibles (except ivory and its products); retail of motorcycles and spare parts; wholesale of motorcycles and spare parts; sales of petroleum products (excluding hazardous chemicals); sales of coal and products; sales of renewable resources; non-residential real estate leasing; and grain sales. .