The registration address of yunnan dingdong construction engineering co. Ltd. Is located in the guangchon town development area of guangcheang city, chen shui city, hebei province. The registration body is the city monitoring authority, represented by a legal person, li wenhong. The scope of operation includes licensed projects: construction works; installation and repair of special equipment; design of building smart systems; electrical installation services; installation, maintenance and testing of power transmission, power supply, electrical power receiving facilities. General projects (for which approval is required by law, subject to the approval of the relevant department, for which approval documents or licences are granted by the relevant department) are: construction of metal structures; marketing of metal structures; research and development of metal products; repair of metal products; sale of metal products; manufacture of communications equipment; professional repair of communications transmission equipment; professional repair of communications exchange equipment; 5g communications technology services; maintenance of information system operations; software development; network and information security software development; information system integration services; professional design services; distribution of network equipment; information technology advisory services; network technology services; internet security services; maintenance of technical services, technology development, technical advice, exchange, technology transfer and technology promotion; transport and public administration of metal brands; transport and public administration of metal brands; transport and public administration sales of signs; maintenance of transport and public administration; export and import of goods; import and export of technology; design of advertising, agency; advertising; advertising; solicitation agency services; domestic trade agency; operation of electrical and electrical infrastructure; leasing equipment; centralization of electrical and electrical equipment; repair of electrical equipment; sale of electrical and electrical equipment; sale of electrical equipment; repair and repair equipment; repair equipment; repair (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)