Sales of mining machinery, sales of pneumatic power machinery and components, sales of pneumatic and electric tools, manufacturing of mining machinery, manufacturing of machinery for construction engineering, sales of machinery for construction engineering, manufacturing of ovens, furnaces and electric furnaces, sales of ovens, furnaces and electric furnaces, sales of hydraulic power machinery and components, hydraulic pressure Power machinery and component manufacturing, general equipment manufacturing (excluding special equipment manufacturing), machinery and equipment sales, auto parts and accessories manufacturing, auto parts retail, auto parts wholesale, auto parts remanufacturing, auto wheel hub manufacturing, auto sales, tire sales, mechanical and electrical equipment Manufacturing, sales of industrial textile products, sales of bearings, gears and transmission parts, sales of rubber products, sales of chemical products (excluding licensed chemical products), retail of motorcycles and spare parts, wholesale of motorcycles and spare parts, sales of metal materials, sales of agricultural and sideline products, wholesale of edible agricultural products, retail of edible agricultural products, sales of special equipment, manufacturing of building decoration, plumbing pipe parts and other metal products for construction, housing leasing, non-residential real estate leasing, import and export agency, technology import and export, import and export of goods, processing of mechanical parts and components, sales of mechanical parts and components