compressed viscose printing sponge for Offset Printing Plate

Compressed viscose sponge, 3 types:
1. Genuine Sponge, after wet, has skin arond it to prevent body damaged, to ensure radially clean the roller surface
2. Duplicated Sponge, after wet, no skin. Price more competitive
3. No compressed Sponge, size like a small brick, has pink, blue and yellow color
Most popular one: Compressed size:120x5x35mmAfter wet size:135x95x35mmWith skin around for protection