Pure gold in gold products refers to gold products with a gold content of not less than 99%, commonly known as "Erjiu Gold", with 99 gold, G99 and other marks. "G" or "AU" is a symbol used internationally to express the purity (i.e. gold content) of gold.

Qianjinjin is a gold product with a gold content of not less than 999‰, and its imprint is Qianjinjin, 999 Gold, gold999 or g999. Pay attention to when buying, thousands of gold is definitely pure gold, but it is not necessarily thousands of gold. Wanjinjin refers to the gold products whose gold content is not less than 9999/ 10000, but not listed in the national standards, but whose imprint is Wanjinjin, 9999 gold, AU9999 or G9999.