The registration address of changheng cleaning technology services ltd. Is located in room 105, located at road no. 166, located at grand ridge mount, grand ridge mount, dong chong city, guangdong province. The registration authority is the market supervision authority of dong chong city, which is represented by legal persons and operates in the form of cleaning technology services; research, development, production and marketing: cleaning equipment, industrial environmental cleaning agents. (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities) i'm not sure