In China, the purest gold is called "CCB Gold", which is a private brand launched by China Construction Bank. Its purity and quality have been strictly tested and controlled, and it is one of the first choices for investors to invest in gold.

The purity of CCB gold is generally 99.99%, which means that the gold content of gold bars is close to 100%. And it has been verified by an authoritative third party organization to ensure the reliability of its quality and purity.