Which department should I apply for a patent?

China National Intellectual Property Administration. When applying for a patent, the applicant shall directly submit or mail the application documents to the reception desk of China National Intellectual Property Administration Patent Office (hereinafter referred to as the reception desk of the Patent Office), or to the local agency of China National Intellectual Property Administration Patent Office (hereinafter referred to as the agency of the Patent Office). At present, the agency is located in Beijing, Shenyang, Jinan, Changsha, Chengdu, Nanjing, Shanghai, Guangzhou, Xi, Wuhan, Zhengzhou, Tianjin, Shijiazhuang, Harbin and Zhengzhou. The national defense patent branch specializes in accepting national defense patent applications.