A logo refers to a symbol or simple or complex structural pattern used to represent or indicate a specific thing, item, place or activity. There are many types of logos in the world, such as trademark logos, city logos, national flag logos, brand logos, etc. These signs often contain rich cultural connotations and historical significance, and they are an important part of social culture.

Trademark logo refers to a trademark used to identify goods and services. It represents a guarantee of credibility and quality. Trademark signs usually use vivid, vivid and eye-catching symbols or words to tell consumers that the quality and reputation of the goods or services are trustworthy in a way that is easy to recognize and remember. The image and design of trademark logos are also an important part of corporate culture and brand image.

The national flag is a national symbol that represents a country’s sovereignty, independence, unity, progress and national spirit. The national flag is also an important symbol of the country's politics, culture, history and humanity. The images and design styles of national flags of different countries are different, highlighting the uniqueness and cultural characteristics of different countries. At the same time, the national flag symbol has also become an important representative of the national image, reflecting the history and reality of different countries.