Trade name refers to the name of an enterprise. The name of the enterprise contains the trade name. The role of the trade name in the name of the enterprise is to highlight the uniqueness of the enterprise and distinguish it from other enterprises. Font size refers to the mark of a product or service. The function of the font size is to distinguish products or services with a certain external mark. It can be said that the trade name is the name of the enterprise, while the trade name is the name of the products or services provided by the company. The common function of the trade name and trade name is to provide identification marks for customers, guide consumers' choices, and expand their own market advantage.