The registration address of nanjian monitoring and control equipment ltd. Is located in room no. 901 of north wang road, central township, dong jing town, guangdong province. The registration authority is the market supervision authority of dong jing city, represented by a legal person, and operates in the following areas: electronic instrument forms, sensors, transformers, industrial controllers. (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities) i'm not sure