The registration address of hebei shincheng and science and technology ltd. Is located at gacai and city 4-2-804, nakayama road, hebei province, with registration as the changan district market supervisory authority, with legal representatives wu yulong operating in the fields of computer software and hardware development, technical advice, technology transfer and installation; computer system integration; integrated wiring; installation of surveillance equipment; data processing and storage services; design, production, proxy domestic advertising operations; issuance of domestic advertising services for domestic and external advertising operations; electrical engineering, mine-proofing works; stationery, office supplies, teaching equipment, laboratory equipment, sound equipment, instrumentation forms, construction materials, fire protection equipment, photographic equipment, handicrafts (except for antique painting), electronics, electrical appliances, chemical test agents (except for dangerous chemicals), non-processed primary agricultural products, hardware, chemical products (except chemicals), mechanical equipment (except for low-speed electric vehicles), communications equipment (except for ground satellite receiving equipment), commercial and peripherals, electrical equipment and conference equipment, electrical equipment for the sale of air, cable and environmental services; (projects subject to legal approval may not operate without the approval of the relevant department)