Technology development, technical services, technical consultation, technology transfer of the Internet of Things; computer system integration; Cultural and artistic exchange planning; computer technology services; Design, production, agency and release of domestic advertising business; Sales: computer software and hardware, electronic products, photovoltaic products; Online sales and sales: electronic products, office supplies, daily necessities, household goods, sporting goods, primary agricultural products, pre-packaged food, computer software and hardware and auxiliary equipment. (If it involves a licensed business project, it should be operated only after obtaining permission from the relevant department)