It is recommended to choose the density of 30 3A fine silk special grinding doll cotton, this material is close to natural cotton, but more durable and long-lasting elasticity.
Domestic sponge density is generally not more than 35%, and higher than this density is mostly resin products, higher cost.
Pearl cotton: pearl cotton is specially processed using high-pressure technology, small molecules, high resilience performance.
Pearl cotton: pearl cotton is specially processed using high-pressure technology, small molecules, high resilience performance.