I think it's best to consider pre-selling things in Tik Tok for two or three months. Many of them need to be customized by manufacturers. I think these things are unsafe, because the time is long, the failure deposit is unstable, and some things have to be paid in full, which is quite risky. Things that are pre-sold for two or three months are often more expensive, and those with lower prices don't have to wait so long, so there are certain risks. If you don't feel at ease, you'd better not buy it, because if you want to buy a lot of things, it may be more expensive in official website, but it can be preserved, so you can buy it in official website, Taobao or JD.COM. You don't have to go to Tik Tok to buy them. Tik Tok sells things informally.