Electronic technology research and development, technology transfer and technical services; electronic products, traffic facilities, mechanical and electrical products R & D, processing, sales; chemical products, construction materials, traffic facilities, mechanical and electrical products sales; network technology consulting and technical services; computer hardware and software research and development, sales; environmental protection engineering, communications engineering, network engineering, optical mechatronics engineering, building intelligent engineering, traffic engineering, construction engineering design, construction and technical consulting and technical services. Construction and technical consulting and technical services. (Projects subject to approval in accordance with the law, approved by the relevant departments before business activities can be carried out)