Technical research and development of police equipment and equipment; clothing manufacturing; sales of steel structures; wholesale of fiberglass materials; wholesale of steel; sales of emergency rescue equipment; repair of emergency rescue equipment; sales of forensic equipment; manufacturing of bedding; wholesale of software; repair of forensic equipment; production of emergency rescue equipment; sales of radiation protection equipment; fiberglass Wholesale of products; manufacturing of cutting tools; manufacturing of hand tools; sales of general machinery and equipment; manufacturing of steel structure parts; wholesale of computer parts and accessories; wholesale of photographic equipment; software development; wholesale of automobiles; wholesale of communication equipment and supporting equipment; wholesale of machinery parts; wholesale of synthetic fibers; wholesale of robots; wholesale of shelves; wholesale of motorcycles; wholesale of labor protection supplies ;Security equipment sales;Safety technology prevention product manufacturing;Computer wholesale;Food science and technology research services;Robot repair;Office equipment wholesale;Smart machine sales;Communication terminal equipment wholesale;Manufacture of special equipment for forensics and identification;Manufacturing of sports equipment and accessories; Wholesale of boxes and bags;Mechanical equipment leasing;Sales signs and signs;Automobile parts Wholesale of accessories; Wholesale of sporting goods and equipment; Manufacturing of metal packaging containers; Wholesale of stationery; Sales of special equipment; Wholesale of rubber products; Manufacturing of teaching models and teaching aids; Wholesale of furniture; Wholesale of safety technology prevention products; Manufacturing of training and fitness equipment; Wholesale of plastic products; Manufacturing of sports protective equipment; Manufacturing of awnings and canvas; Internet product sales (Xu Except for goods that can be approved); manufacturing of communication system equipment; sales of packaging materials; monitoring system engineering installation services; smart card system engineering services; wholesale of leather and leather products; robotic system technical services; intelligent machine system technical services; drone system technical services; manufacturing of safety inspection instruments; commodity wholesale trade (licensed and approved businesses) (except products); security system monitoring services; security monitoring and anti-theft alarm system engineering services; wholesale of hardware products; wholesale of glasses; wholesale of watches; wholesale of shoes; wholesale of lamps and decorative items; wholesale of instruments and meters; wholesale of clothing accessories; wholesale of electronic products; research and design services for labor protection supplies; wholesale of fire-fighting equipment and equipment; wholesale of textiles and knitting Wholesale of products and raw materials; wholesale of clothing; sports equipment and equipment installation services; manufacturing of diving and underwater rescue equipment; construction of outdoor sports facilities; wholesale of building materials and decorative materials; retail of sporting goods and equipment; road cargo transportation agency; hat manufacturing; other shoemaking industries; mechanical and electrical equipment installation services; construction of housing construction projects; construction of municipal public works; Earthwork engineering services; construction steel structure and prefabricated component engineering installation services; production of police equipment and equipment; sales of police equipment and equipment; manufacturing of special labor protection clothing; food testing services; production of individual protective components (anti-riot clothing); production of bullet-proof clothing; production of bullet-proof vests; production of stab-proof clothing; production of explosive search clothing; production of explosive disposal clothing