You can look it up on China Trademark Online.
EPO, the patent retrieval and service system of China Patent Office, has comprehensive information and provides translation services in multiple languages. KIPRIS, Korea Bureau, in fact, because of the openness of patent information, many retrieval systems above contain more patent information than domestic ones. For example, the system of the European agency contains a lot of patent information of the United States and Japan. In addition, there are many commercial or non-commercial non-governmental websites that also provide comprehensive patent information retrieval.