Software Development, System Integration,Computer technology services and consulting; Electronic Automation Engineering, Mechanical and electrical installation( Except special equipment), Building intelligent engineering, Security Engineering, Environmental Protection Engineering; R&D and sales of instruments and meters; High and low voltage cabinets, Office automation equipment, Environmentally friendly materials and equipment, office supplies, furniture, Metal materials, Sales of building materials; Self-operated and agency import and export business of various commodities( The above projects require approval according to law, Business activities can only be carried out after approval from relevant departments)