The purity of gold refers to the content of gold. Generally, K is used to indicate the purity of gold. 24K gold has the highest purity, followed by 18K and so on. 18K gold means that the content of gold is 18/24, that is, 75%, and the remaining 25% is other metals, usually copper and silver in gold ornaments, and 24K gold means pure gold. The name of gold depends on its purity.

Chaohongji belongs to the first-line gold brand, and there will be gold of various purities. Generally sell 18K gold and 24K gold.