Development, production, sales and services of automatic and information products, sales of communication equipment, computer software and hardware products; production, sales and engineering construction of power energy-saving equipment and complete sets of automation equipment; development, consultation, service and maintenance of automation technology; production and sales of intelligent mechanical equipment, electromechanical equipment, water treatment equipment, complete sets of water supply and drainage equipment, building automation equipment, and automated assembly line equipment; sales and engineering construction of video and security systems; bidding agency services, project cost consulting services; car rental services.