Business scope includes: Refrigeration equipment, mechanical and electrical equipment, electronic components, automatic control system, ventilation and HVAC equipment, Marine supplies and accessories, hardware and electrical equipment, instruments and meters, computer hardware and software, metal materials, textiles, cosmetics, building and decoration materials, chemical raw materials and products (except hazardous chemicals, monitoring chemicals, fireworks and firecrackers, civil explosives, precursor chemicals) Buy and sell on a commission basis; Refrigeration equipment installation, maintenance and service; Water and electricity installation (except installation, repair and test of electric power facilities); Municipal engineering; Communication engineering; Processing and installation of mechanical and electrical equipment and accessories (limited to branch offices); Engaging in the import and export of goods and technologies; Business information consulting.