Canned lubricating oil, general mechanical equipment and spare parts, automation equipment, electronic products, hardware products, electromechanical products, industrial mechanical equipment, pneumatic hydraulic components, instruments, electric tools, labor protection products, bearings, office supplies, rubber products, fire fighting equipment, steel, valves, water pumps, boiler materials, thermal insulation materials, packaging and printing materials, metal materials, building materials, textile products; Production and sales: Environmental protection hydrocarbon cleaning agent; Sales and maintenance: Industrial equipment: Import and export of goods or technologies (excluding those prohibited by the state or involving administrative approval). (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments.