The registration address of dong zheng, ltd., is located in room 201, no. 6, midtown road, dong zheng city, guangdong province. The registration authority is the market supervision authority of dong zhong city, with legal representation and includes research and development, wholesale, retail and online sales of smart equipment, adult goods, handicrafts (except for ivory and its products), clothing, shoes, hats, mobile parts, toys, labour security supplies, sports supplies, office supplies, electronics products and accessories, metering equipment, electric tools, computers and accessories, hardware, hardware and communications, hardware, hardware and equipment, hardware and communications, installation, testing, maintenance, software design and development, computer system development, computer network engineering, website design and development, goods and technology (with the exception of goods and technology, which are prohibited by the state or are related to administrative authorization), technology development, technical services in the field of computer, electronics, automated hardware and software development, network communications engineering, distribution, installation, testing, maintenance, software design and development, computer system development, computer network design and development, web-based design, web-based services development, and communications system development, and automation, and (projects subject to legal approval may not operate without the approval of the relevant department)