1. Quick rebound, strong toughness: Sponge toughness, not easy to deform, can be arbitrarily squeezed or folded
2. High-quality raw materials: finished products without odor and formaldehyde-free
3. Uniform porosity and high density: dense pores, more wear-resistant and not easy to drop, good quality
4. Strong ink absorption: easy to press and ink absorption is fast, easier to use
