The city of nanjing has the registered address in room 101, located in the qinhuai district of nanjing, located in the qinhuai district, located at the qinhuai district ash dump. The registration authority is the market supervision authority of the qinhuai district of nanjing city, represented by a legal person, and operates in the areas of roll doors, electric induction doors, glass doors, fireproof doors, steel doors, zip doors, zippers, window sales, installation and processing; and the sale of voltage electric machines, hardware accessories. (projects subject to legal approval may not operate without the approval of the relevant department)