Where do I apply for a patent in Qinhuangdao?

As far as I know, China Trademark Patent Office is the largest and most authoritative trademark office in China. Its superior organ is the State Trademark Office. Like Bank of China, they have branches and offices in many regions and cities, and the number of trademark applications accepted is also the largest in China. They can register not only Chinese trademarks, but also international trademarks. They set up an office in Qinhuangdao in 2002. The office is located in the Municipal Intellectual Property Association. Address: 5th Floor, CITIC Building, No.366 Wenhua Road, Qinhuangdao (opposite to Muslim Building). Their telephone number is 302 128 1. 88 1 1925