They all belong to the four major brands in Hong Kong, and the prices are almost synchronous, which is extremely expensive and not cost-effective. Chow Tai Fook has more outlets than good or bad. After-sales are all cheated. No matter what happens, they must return to the factory. It is not recommended to buy these two brands, Xie Ruilin, Golden Supreme and Zhou Shengsheng. Although their service may be better, the price is more expensive than other brands 100.