I worked in Baijue before. Let's just say that there is no need to adulterate the gold products that big stores dare to sell, especially 18k, which is not expensive (unless it is lottery gold 18K). Adulteration is boring. Someone went to quality inspection to detect adulteration. You can ask him which part you are testing. In order to blackmail enterprises, many people go to the Quality Supervision Bureau to inspect solder joints. No solder joints, please. So it's definitely not enough, but it's not too bad. I'm sure the rest will be fine.