General items: Technical service, technical development, technical consultation, technical exchange, technology transfer, technology promotion; Navigation terminal sales; Navigation terminal manufacturing; Instrumentation manufacturing; Instrument maintenance; Instrumentation sales; Optical brazing sales; Power electronic components production; Manufacturing of integrated circuit chips and products; Manufacturing of optoelectronic devices; Manufacturing of electronic special materials; Manufacturing of instruments and meters only; Sales of integrated circuit chips and products; System development; Information system integration services; Intelligent control system integration; General machinery and equipment installation services; Machinery and equipment leasing; Machinery and equipment research and development; Industrial automatic control system equipment sales; Industrial automatic control system device manufacturing; Intelligent basic manufacturing equipment sales; Synthetic material manufacturing (excluding hazardous chemicals); Optical cable sales; Synthetic material sales; Technology import and export; Import and export agency;