Metal products, fasteners, mechanical and electrical equipment sales, metal chains and other products sales, metal materials sales, electrical equipment sales, hardware products retail, mechanical parts, spare parts sales, hardware products wholesale, sales of photovoltaic equipment and components, sales of power electronic components, wire and cable business, auto parts wholesale, mining machinery sales, packaging materials and products sales, chemical products sales, sporting goods colorful daemons, daily necessities department store sales, office supplies sales, goods import and export.