It should be 10g50ml, and 680 is not expensive. As long as it is genuine, it is not expensive around 600 or 700 yuan, and there are more than 1000 pieces on the black market. I hope it will help you. You can't buy it in this ordinary place, and some of them can't be sold at all. I hope you can go to a large hospital for a walk. It's better to ask the doctor concerned. I hope it helps you!