Distribution: Automated machinery and equipment and accessories, electromechanical equipment and accessories (electric tools, refrigeration equipment, compressors and accessories, tools and measuring instruments), instruments and meters and spare parts, computer software, hardware and accessories, hardware and electrical equipment, automotive parts and accessories; Engaged in the import and export business of electronic products, machinery and equipment, hardware and electromechanical products, as well as related supporting services (the import and export of the above commodities does not involve state-run trade, import and export quota licenses, export quota bidding, export licenses, and other specially managed commodities. For commodities involving other special regulations, relevant national regulations shall be followed); On-site installation and maintenance: Automated machinery and equipment, instruments and tools, machinery and equipment spare parts, machine equipment, instruments and meters and spare parts.