High and low voltage electrical appliances and accessories, electronic components, wires and cables and accessories, plastic products, pneumatic components, explosion-proof electrical appliances, instruments and meters (excluding measuring instruments), bus bridges, switch buttons, standard parts, screws, security equipment, fire-fighting appliances, household appliances, lighting equipment, hardware tools, power fittings, auto accessories, motorcycle accessories, automated testing equipment, industrial automation control equipment, new energy equipment and accessories R&D, manufacturing, processing and sales; import and export of goods, import and export of technology.