1. Ordinary vacuum bag, its material contains PET and PE (polyethylene).
2. Nylon vacuum bag, its materials are NY and PE.
3. Retort vacuum bag, its materials are CPP (retort) and PET.
In fact, some of these vacuum bags have better quality and toughness, but their price is slightly higher than that of ordinary vacuum bags. Of course, the existence of every kind of bag has its inevitable market value.
