Chow Tai Fook is a Hong Kong brand, so it is understandable that he can be called the first domestic jewelry brand. Many styles were introduced by other brands after Chow Tai Fook sold them for several years. Moreover, Chow Tai Fook has a feature of direct sales. Don't underestimate this. This is the only way to ensure the quality of a brand product. For example, other brands have the difference between direct stores and agent franchisees. Franchisees can take some goods from the headquarters, bring some goods back from the outside market, print and sell them, and earn a higher price difference, but the quality cannot be guaranteed. For example, gold is doped with iridium, which is difficult to detect when you go to a professional precious metal testing department. So Chow Tai Fook did a good job. However, big brands often don't give you too many promises after sale, such as repurchase and money exchange. There is no great happiness. But I remember that some shops in Dafu also started to change money. Personally, I think that money exchange and repurchase can increase sales, but it is also a sign and the beginning of the decline in the quality of a brand product. Some specific things are not convenient to say more.