Technical research and development of police equipment and equipment; wholesale of safety technology and prevention products; retail of safety technology and prevention products; manufacturing of safety technology and prevention products; sales of security equipment; wholesale of office equipment and consumables; wholesale of sporting goods and equipment; wholesale of instruments and meters; wholesale of labor protection products; retail of labor protection products; manufacturing of safety inspection instruments ; Manufacturing of traffic safety, control and similar special equipment; installation of various traffic lights and systems; wholesale of clothing; wholesale of shoes; wholesale of hats; wholesale trade of commodities (except for goods subject to licensing approval); research, development and design of radiation protection equipment; sales of radiation protection equipment; technical research and development of explosive disposal equipment; fire-fighting equipment and equipment Wholesale; retail of fire-fighting equipment and equipment; wholesale of communication equipment and supporting equipment; sales of special equipment; technical development and application of drone software and hardware; sales of drones; retail trade of goods (except licensed goods); manufacturing of fire-fighting equipment and equipment; retail of medical supplies and equipment (excluding drugs and medical devices); non-licensed medical care Equipment business; computer technology development and technical services; computer wholesale; computer spare parts wholesale; software wholesale; software retail; software development; electronic product wholesale; electronic product retail; technical research and development of emergency rescue equipment; production of emergency rescue equipment; sales of emergency rescue equipment; technical research and technology of forensic identification equipment Development; manufacturing of special equipment for forensics and identification; sales of forensic and identification equipment; import and export of goods (except for specialized products); wholesale of office equipment; sales of electrical machinery and equipment; retail of general mechanical equipment; retail of mechanical accessories; wholesale of photographic equipment; retail of photographic equipment; sales of general mechanical equipment; installation and maintenance of radiation protection equipment; security surveillance Control and anti-theft alarm system engineering services; surveillance system engineering installation services; electronic equipment engineering installation services; lighting manufacturing; urban rail transit equipment manufacturing; wholesale of glasses; wholesale of boxes and bags; clothing manufacturing; hat manufacturing; fur clothing processing; leather gloves and leather decorative products manufacturing; knitted or crocheted clothing manufacturing; training and fitness equipment Manufacturing; information system integration services; wholesale of communication terminal equipment; design and installation services of logos and signboards; sales of signs and signs; wholesale of metal products; manufacturing of metal signs for transportation and public administration; research, development and design of electromagnetic shielding equipment; sales of electromagnetic shielding equipment; installation and maintenance of electromagnetic shielding equipment; sales of the company Products produced (except for items prohibited by national laws and regulations; products involving licensed operations must obtain a license before they can be operated); technological research and development of robots; sales of robots; wholesale of motorcycles; wholesale of motorcycle parts and accessories; wholesale of automobile parts and accessories; car sales; production of police equipment and equipment; sales of police equipment and equipment