Our main business includes: technology import and export; Import and export of goods; Technical services, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Science and technology extension and application services; Information consulting services; Internet sales; Network and information security software development; Sales of wearable smart devices; Sales of electronic products; Office equipment consumables sales; Sales of household appliances; Sales of cameras and equipment; Sales of power electronic components; Communication equipment sales; Intelligent instrument sales; Hardware products retail; Daily general merchandise sales; Sports goods and equipment retail; Metal material sales; Machinery and equipment sales; Arts and crafts and collectibles retail; Stationery retail; Sales of photovoltaic equipment and components; Agricultural and sideline product sales; Smart home consumer equipment sales; Intelligent vehicle equipment sales; Audio equipment sales; Mobile communication equipment sales; Internet of Things equipment sales; Home appliances parts sales; New energy primary equipment sales; Sales of special equipment for environmental protection; Medical mask retail; Retail of protective equipment for medical staff; Wholesale of medical masks; Wholesale of protective supplies for medical staff; Sales of labor protection articles; Marketing of sanitary products and single-use medical supplies; Daily mask sales; Communication equipment sales; Network equipment sales; Research and development of household appliances; Household appliance manufacturing; Lighting sales; Medical device sales.