It represents copyright, which is a copyright statement. This type of logo may appear more on publications, such as books, albums, etc., which means that the publication is authorized and not pirated.

There are two ways to obtain copyright: automatic acquisition and registration acquisition. In China, according to the copyright law, copyright automatically accompanies a work when it is completed. However, if it is not registered, it will be difficult to prove its ownership when a copyright dispute occurs. In addition, copyright registration of a trademark will help protect the trademark in the future. As the public's awareness of copyright increases, the ? logo appears more and more frequently in daily life.

Extended information:

Since 2011, my country has decided to implement the C mark system for quantitatively packaged goods, drawing on European experience. C is the initials of CHINA, and the first batch has been identified for wine and edible oil. 13 kinds of quantitatively packaged products such as instant noodles, rice, milk powder, milk, and purified water use the C mark. All products with the C mark are sufficient, and consumers can buy them with confidence. Since the unit of measurement is created by man, integrity is the soul of measurement.

Baidu Encyclopedia-Copyright

People's Daily Online-A survey said that most grain and oil and other quantitatively packaged commodities are not marked with a "C" mark