Air compressors, transformers, distribution switch control equipment, electronic components, connectors, electronic wiring harnesses, power electronic components, high and low voltage electrical appliances and complete sets of equipment, instruments and meters (excluding measuring instruments), wires and cables, other power transmission and distribution and control equipment, pneumatic components, lighting fixtures, rubber parts, plastic parts, hardware, auto parts, motorcycle parts R&D, manufacturing, processing and sales; production, publishing and agency for various domestic advertising businesses; computer network technology services; import and export of goods, technology import and export.