Gold in Zhou Dasheng will be engraved with the words "AU990", "G990", "CTS" or "Zhou Dasheng".

Zhou Dasheng's steel seal will mark words with different meanings in different positions of jewelry. There are various kinds of jewelry in Zhou Dasheng, and the steel seal of different jewelry is also different.

For example, the steel seal of Zhou Dasheng gold bracelet will print the words "Zhou Dasheng" and "AU990" on the inner wall of the bracelet. Another example is the platinum bracelet in Zhou Dasheng. The words "Zhou Dasheng" and "pt950" will be printed on the inner wall of the bracelet.

Chow Tai Sang Jewelry Co., Ltd. is mainly engaged in the design, production, brand operation and chain operation of Zhou Dasheng brand jewelry. It is one of the largest jewelry brand operators in China and the leading diamond jewelry brand in the middle and high-end mainstream market in China.

Relevant regulations on steel seal of gold jewelry:

According to national regulations, gold jewelry products must be stamped with steel seal, and the steel seal should have information such as brand, purity and quality. AU is the chemical symbol of gold, and G is the abbreviation of the English word Gold, which stands for gold.

AU990 and G990 stand for pure gold. According to national regulations, pure gold is gold with a gold content of not less than 99%. Then AU750, G750 and G 18K represent gold with a gold content of 75%.

Focus, GP and KP represent gold plating, KF represents gold cladding, and GF and KGF represent forged gold. Jewelry with these five seals is not gold.

Reference to the above content: Baidu Encyclopedia-Zhou Dasheng

Refer to the above content: Baidu Encyclopedia-Gold Jewelry Seal