Zhou Dasheng is a jewelry retailer, and China Gold is one of the leading gold processing enterprises in China. Jewelry sold in Zhou Dasheng may use gold materials processed by China gold. Zhou Dasheng and China Gold jointly launched a joint jewelry series. These products are usually marked with the trademarks of "China Gold Zhou Dasheng" or "Zhou Dasheng China Gold", and may be accompanied by the warranty certificate of China Gold. Therefore, if you buy Chow Tai Sang jewelry products with the warranty of China Gold, it may be because the products are made of China Gold, or belong to the joint jewelry series jointly launched by China Gold and Zhou Dasheng. For specific reasons, you need to check the product information and purchase channels.