Engage in & ldquo; Electronics, computer software, instruments and meters, laboratory equipment, electromechanical equipment (except special equipment), electrical equipment (except installation, repair and power facilities), environmental protection equipment & rdquo; Technical development, technical consultation, technical services, industrial automation, mechanical equipment installation (except special equipment), electronic products, instruments and meters, laboratory equipment, electromechanical equipment and accessories, electrical equipment and accessories, environmental protection equipment, metal materials and products, chemical raw materials and products, hardware and electricity, computers, software and auxiliary equipment, communication equipment, Daily necessities, knitwear and textile sales, engaged in goods import and export and technology import and export business.