China Jewelry Import and Export Corporation (hereinafter referred to as "China Jewelry") is a professional jewelry company wholly owned by China Craft (Group) Co., Ltd., which is mainly engaged in all kinds of jewelry import and export business, material processing, product processing, wholesale and retail business and domestic market retail and wholesale processing business.

Both 999 and 9999 represent gold content, with 999 being 99.9% and 9999 being 99.99%.

From May, 20 16, the state stipulated that gold should be marked with pure gold, not pure gold, and the purity of gold should be above 990.