What is the difference between disposable masks and medical masks?

What is the difference between disposable masks and medical masks?
Simply put, the disposable mask is a kind of medical oral mask.
There are many types of medical masks, and common medical masks are disposable non-woven masks, gauze masks and anti-virus masks.
1. Disposable non-woven masks: mostly three layers or more, to isolate bacteria and dust, and to be used once, safe and reliable, without the risk of secondary infection.
2. Gauze mask: the type of mask that has been used for a long time, it has a wide range of applications in the field of medical care and scientific research.
3. Anti-virus mask: it is mainly made of non-woven fabric material, with a filter layer in the middle, and the filter layer is generally melt-blown cloth. It has the effect of sterilization and sterilization.