The gold sold in Liu Fu jewelry is marked with "9999", which emphasizes that its gold purity is extremely high. Such labeling may be to highlight the high quality and purity of its gold jewelry and attract consumers' attention to its products.

Jewelry brands such as Zhou Shengsheng may also be marked with "999" or other forms, which does not necessarily mean that their gold quality is not good. In addition to purity, the quality of gold jewelry also involves production technology, design, brand reputation and so on. Different brands may choose the way of labeling according to their own positioning and marketing strategies.

When buying gold jewelry, besides paying attention to purity, we should also consider factors such as brand reputation, price, style and our own needs. If you are in doubt about the purity of gold, you can ask the salesperson in the jewelry store for more information about the product.