Technology promotion services; import and export of goods; import and export agency; sales of machinery and equipment, metal materials, Wujijiaodian, building materials, medical equipment (limited to Class I), chemical products (excluding hazardous chemicals), computers, software and auxiliary equipment, clothing, handicrafts, daily necessities, sporting goods, stationery, cosmetics, mobile phone accessories, lamps, mechanical equipment, electrical equipment; equipment installation; design of automated assembly lines; sports project management (except for high-risk sports); equipment leasing; sports event planning; sales of food.