Various engineering construction activities and engineering design. (Projects that need to be approved according to law can only be operated after being approved by relevant departments. The specific business items are subject to the approval documents or licenses of relevant departments. ) General projects: Engaged in technology development, technology transfer, technology consulting, technical services, computer software and hardware, electronic products, communication equipment and related products, building materials Sales of craft gifts (except ivory and its products), computer system integration, installation and sales of mechanical and electrical equipment and accessories, sales of wires and cables, electronic products, cosmetics, household goods, and general merchandise