Technical services in the optoelectronics field、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Software Development、 Information system integration services, Internet security services, electronic( gas) Manufacturing of physical equipment and other electronic equipment, electronic、 Mechanical equipment maintenance( Excluding special equipment), Computer software, hardware and peripheral equipment manufacturing, Retail of computer software, hardware and auxiliary equipment, Paper product manufacturing, Paper product sales, Paper and paperboard container manufacturing。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)