The "International Classification of Goods and Services for Trademark Registration" (Nice Classification) was formulated based on an agreement reached by the Nice Diplomatic Conference on June 15, 1957 (Nice Agreement). Each member state of the Nice Agreement is obliged to use the Nice Classification in trademark registration and must indicate the class number of the international classification of the goods or services to which the registered trademark belongs in official documents and publications related to trademark registration. my country joined the Nice Agreement in 1994 and began to use the International Goods Classification for Trademark Registration in November 1988. After the amendment to the Trademark Law was implemented on July 1, 1993, it also began to use the International Service Classification. The Nice Agreement mainly stipulates the classification of goods and services, which divides goods into thirty-four categories and services into eight categories. This classification provides great convenience for trademark search and trademark management

The "Table of Distinguishing Similar Goods and Services" is for the needs of trademark search, review, and management work. The trademark administrative department summarizes years of practical work experience and extensively solicits opinions from various departments. It distinguishes certain items that have specific connections and may easily lead to misunderstandings. Goods or services are put together and compiled. The "Classification Table of Similar Goods and Services" can be used as a reference for trademark examiners, trademark agents and trademark registration applicants to determine similar goods or services. It can also be used as a reference for administrative and judicial organs to determine similar goods or services when handling trademark cases.