R&D, production, processing and sales: Hardware products, springs, optical lens parts, radiators, precision molds, precision hardware, connectors and plastics, terminal accessories, communication products and accessories, new energy battery accessories, artificial intelligence equipment and software development; Engaged in wholesale and import and export business of similar products produced by oneself; Transfer of patents or technologies formed by research and development achievements, as well as agency inspection and testing services; Rental of own factory buildings. The above projects do not involve special management measures for foreign investment access. (Projects that require approval according to law can only be operated with the approval of relevant departments)