1, go to the offline store to buy it first. You can go directly to the offline store to see if there are 19.9 yuan slimming cards for sale. Just buy it directly.

Secondly, you can also buy it online. Some weight-loss shops are sold in groups online. At this time, you can buy it directly online and spend it in the store.

3. Finally, official website. If there is a slimming shop in official website, you can go to official website to see if there is a slimming card with a price of 19.9 yuan for sale. If there is, you can buy it.