As far as I know, the China Trademark and Patent Office is the largest and most authoritative trademark office in my country. Its superior supervisory unit is the State Trademark Office. Like the Bank of China, they have offices in many regions and cities. With branches and offices, they handle the largest number of trademark applications in the country. Not only can they register Chinese trademarks, but they can also register international trademarks. They set up an office in Qinhuangdao in 2002, and the office is located At the Municipal Intellectual Property Association, the address is: 5th Floor, CITIC Building, No. 366 Wenhua Road, Qinhuangdao City (opposite to the Muslim Building). Their phone number: 3021281; 8811925