Manufacturing and sales of complete sets of high and low voltage electrical equipment, cable trays, bus ducts, distribution boxes, low-voltage cabinets, high-voltage cabinets, wires and cables, hardware products (except electric tricycles), and mechanical parts (except for the above-mentioned projects with special provisions in the country); self-operated and agent import and export business of various commodities and technologies; installation of complete sets of electrical equipment (except power facilities); design and construction of building decoration and decoration projects.