The registration address of dong jing city sky test equipment ltd. Is located in building 101, no. 1, sin road no. 1, changping town, dong jing town, guangdong province. The registration authority is the market supervision authority of dong jing city, represented by a legal person, yang yusheng, operating in the following areas: environmental testing equipment, detection equipment, instrument instruments, general mechanical equipment and accessories, hardware machinery; import and export of goods or technology (except for goods and technology whose import and export is prohibited by the state or which involves administrative authorization). (projects subject to legal approval to operate with the approval of the relevant department)