Research and development of electronic, communication, and automatic control technologies; Research and development of communication technology, technical services; Power electronic technology services; Electronic automation engineering installation services; Electronic equipment engineering installation services; Manufacturing of lighting fixtures; Manufacturing of optoelectronic devices and other electronic devices; Mechanical and electrical equipment installation services; Professional contracting of mechanical and electrical equipment installation engineering; Manufacturing of electrical signal equipment devices; Manufacturing of electrical accessories, distribution or control equipment parts; Import and export of goods