Sales of IoT devices; Domestic trade agency; Sales agent; Sales of electronic specialized materials; Software development; Development of network and information security software; Integrated circuit design; Information consulting services (excluding licensed information consulting services); Research and development of electronic specialized materials; Internet security services; Sales of electronic components and electromechanical component equipment; Retail of electronic components; Sales of electronic products; Sales of display devices; Internet sales (excluding sales of goods that require licensing); Internet device sales; Sales of electronic specialized equipment; Sales of power electronic components; Sales of electrical equipment; Sales of optoelectronic devices; Internet data services;; Import and export agency; Import and export of goods; Technology import and export