The business scope includes sales of thermal and acoustic insulation materials; Metal tools sales hardware products wholesale; Sales of refrigeration and air-conditioning equipment; Internet equipment sales; Daily necessities sales; Sales of household appliance parts; Food, wine, beverages. Manufacture of special equipment for tea production; Ovens, furnaces and electric furnaces; Special equipment manufacturing (excluding licensed professional equipment manufacturing); General equipment manufacturing (excluding special equipment manufacturing); Sales of metal products; Metal packaging containers and materials manufacturing; General purpose parts manufacturing; Sales of ovens, furnaces and electric furnaces; Research and development of metal products; Machinery and equipment leasing; Mechanical equipment research and development; Sales of electrical and mechanical equipment; Domestic trade agency; Information technology consulting services; Information consulting services (excluding licensed information consulting services); Metal cutting and welding equipment sales; Electrical equipment sales; Electric heating food processing equipment production; Import and export of goods; Technology import and export; Import and export agent;