Electronic product design services; wholesale of communication equipment and supporting equipment; electronic automation engineering installation services; manufacturing of curtains and fabric products; door and window installation; electromechanical equipment installation services; wholesale of household appliances; electronic engineering design services; integrated circuit design; integrated circuit manufacturing; commodity wholesale trade (except licensed and approved goods); import and export of goods (except specialized and controlled goods); technology import and export; electrical equipment repair; electrical equipment wholesale; electrical equipment retail; electric motor sales; distribution switch control equipment manufacturing; general Sales of machinery and equipment; retail of general machinery and equipment; sale of products produced by the company (except for items prohibited by national laws and regulations; products involving licensed operations must obtain a license before they can be operated); sales of electrical machinery and equipment; repair of special equipment; installation of special equipment (except elevators and boilers); sales of special equipment; retail of daily household appliances; energy-saving technology development services; energy technology research and technology development services; intelligent installation engineering services; communication system engineering services; motor manufacturing; electrical machinery manufacturing;