Is there a patent for iron waist plate?

It mainly depends on what the waist looks like, but in most cases, an iron waist plate is enough. For example, in my case, the longer I sit, the stronger I feel. I haven't used the iron waist plate for a long time, but I insist that the effect of the iron waist plate is really good, and it is enough to maintain the waist. What's more, it is a famous brand with patents and honorary certificates, and it has strength and ability. They're fine anyway. This information can be found through Baidu.