Shiitake mushroom beef sauce belongs to the 29th class trademark, of which 2901 is required.

A trademark is a distinctive sign that identifies a certain product, service, or a specific individual or enterprise related to it. When a brand or part of a brand is registered by the relevant government department in accordance with the law, it is called a "trademark." It can be graphics or words, or it can be represented by sounds, smells, or stereograms. Trademarks are protected by law, and the registrant has exclusive rights. Well-known trademarks in the international market are often registered in many countries. China has registered trademarks and unregistered trademarks. The former are trademarks that are protected by law after being registered with relevant government departments, while the latter are not protected by trademark laws.