According to the World Intellectual Property Organization's "International Classification of Goods and Services for Trademark Registration", trademarks are divided into 42 categories. Among them, categories 1-34 are commodity trademarks, and categories 35-42 are service trademarks. Whether some goods and services in the book are similar must be judged based on the functions, uses, transaction methods of the goods, and the actual conditions of the specific service industry, service implementation place, and service objects. Product trademark: refers to a mark used by producers or operators of goods to distinguish their own goods from those of others. Service trademark: refers to a mark used by a service provider to distinguish the services it provides from those provided by others. Trademark classification