This. Honestly, if you don't talk about specific parameters. I can't even say it. But Zhou Dasheng is a brand after all. At least the brand is an invisible guarantee (although the brand store will soon pass the buck afterwards). Ha, but it still depends on your luck and the maintenance of jewelry. Because the goods in brand stores are actually customized by the factory. So everything is the same, and the price of the place where it is sold is the same), while AU750 means 18K gold, that is, 75% gold and 25% other metals, and then plated with a layer of white metal, so it becomes white. The advantage is that it is strong and cheap, and the disadvantage is that it can be worn continuously for 7 or 8 months. If you don't clean it up. The ring may turn yellow, but what can really be called platinum is actually platinum PT (not palladium PD). ) is always white. But it's expensive and a little soft. Ha.