
Manufacturing of optical cables; Sales of optical cables and optical fibers; Sales of photovoltaic equipment and components; Sales of power electronic components; Retail of electronic components; Sales of optical communication equipment; Sales of network equipment; Sales of wires and cables; Sales of instruments and meters; Sales of optoelectronic devices; Sales of intelligent robots; Sales of intelligent unmanned aerial vehicles; Import and export of goods; Import and export of technologies; Technical services, development, consultation, exchange, transfer and promotion; Import and export agency; Online retail via the Internet (excluding commodities subject to special licensing requirements).