(1) Trademarks have the function of indicating the source of goods (referring to the production enterprise). Products using the same trademark are generally produced by the same manufacturer. In order to consolidate its position in the market, companies must produce goods of high quality and affordable prices to increase the credibility of their trademarks, so as to attract consumers to subscribe according to their trademarks.

(2) Trademarks have the function of indicating the quality of goods. Goods using the same trademark often have the same quality. Consumers can buy the goods they want with a certain quality by identifying the trademark.

(3) Trademarks have the function of promoting products and expanding sales. Trademarks can generally be divided into: word trademarks, pattern trademarks, symbol trademarks and combination trademarks.