HomeTag

Sponge hardener

Sponge hardener New generation sponge hardener Adjusting sponge hardness has always been a difficult problem in the production of polyurethane block sponges. Sponge hardness can be adjusted in different ways. Usually, decreasing the hardness of a sponge, i.e. softening the sponge, does not change the other properties of the sponge too much, but it is...