What is the meaning of C in the trademark classification table?

hello, I'm glad to answer your questions. In the Classification Table, the commodity numbers and service numbers used in the International Classification are arranged behind the names of goods and services, and the names of some commonly used goods and services in China that are not included in the International Classification are also arranged with serial numbers, marked with "C" to distinguish them, indicating that China is a unique trademark. For example, C2124 daily-use porcelain, C2125 daily-use pottery (including pots, bowls, plates, jars, cans, casseroles, pots and stoneware tableware), C2126 ceramic support balls, C2127 acid-resistant and alkali-resistant ceramics, C2128 imitation porcelain, C2129 imitation pottery, etc.