Electric power automation instruments and systems, industrial automatic control system devices, electrical instrumentation, electronic measuring instruments, experimental analysis instruments, navigation, meteorological and marine special instruments, manufacturing and sales of electronic components and assemblies; high and low voltage electrical appliances and complete sets of equipment, hardware products, electronic products products, computers, software and auxiliary equipment, steel, building materials (except wood chips), chemical products (excluding flammable, explosive and hazardous chemicals), electronic transformers, cable accessories, electrical insulators, communication, insulating and fireproof materials, knitwear, textiles, cosmetics and sanitary products, Bathroom utensils and daily groceries, stationery, lamps, communication terminal equipment, fitness equipment, photographic equipment, automated fire-fighting equipment, fire extinguishers and parts, electrical equipment, furniture, household appliances, clothing, shoes and hats, rubber products, plastic products, automobiles (excluding nine seats or less) Passenger cars), motorcycles and their parts, bicycles and their parts wholesale and retail; electrical equipment, instrumentation, household appliances repair; integrated circuit design; engineering and technology research and experimental development; warehousing services (excluding flammable, explosive and hazardous chemicals); software development. .