It must be cold dishes and overheated dishes. The price between the two is very high. The biggest difference between the two is that the film covering material is different. Generally speaking, the bonding material of the hot plate is PS material and the cold plate is PVC film. In production, the hot plate does not need glue, and the cold plate needs glue.

See what material you pack. In case of spray-painted adhesive:

Ordinary kt board usually bubbles in a few weeks, and a good hot plate bubbles in about three months. Cold cuts are usually about six months to a year. Kt board There is also a paper kt board, which is also a kind of cold plate. This kind of board won't blister.

If the material you paste is printed on paper, you can use a hot plate without worrying about foaming.

Popularize the knowledge of kt plate foaming: kt plate foaming is not the foaming of the plate itself, but usually refers to the separation of the surface substance from the plate itself, which is not called kt plate foaming. The kt board itself will only bubble if the kt board is poor.