General project: Research and development of electronic specialized materials; Electronic product sales; Sales of display devices; Manufacturing of display devices; Sales of semiconductor lighting devices; Manufacturing of semiconductor lighting devices; Sales of lighting fixtures; Manufacturing of lighting fixtures; Manufacturing of electronic specialized materials; Sales of electronic specialized materials; Sales of lighting fixtures; Sales of office supplies; Retail of computer software, hardware, and auxiliary equipment; Wholesale of computer software, hardware, and auxiliary equipment; Software development; Basic software development for artificial intelligence; Development of artificial intelligence application software; Artificial intelligence theory and algorithm software development; Sales of information security equipment; Manufacturing of information security equipment; Retail of electronic components; Wholesale of electronic components; Manufacturing of electronic components; Manufacturing of optical communication equipment; Sales of optical communication equipment; Manufacturing of metal structures; Sales of metal structures; Rental services (excluding licensed rental services); Design and construction services for security technology prevention systems; Municipal facility management (excluding licensed businesses, can independently operate projects that are not prohibited or restricted by laws and regulations) Licensed projects: Electrical installation services; Construction project design; Design of Building Intelligent System (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects are subject to approval documents or permits from relevant departments)