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'Name': thick coral car wash sponge

'Material': porous coral polyester sponge
'Specifications': 17 * 11 * 9cm

'Color': Dark yellow brown
'Weight': 38G

'Packing number': 260 pieces / piece

'Box rules': 100 * 68 * 62cm
'Packaging': PDF film
'product description':

Soft; do not scratch the body surface .....

The composition of the sponge is mostly polyurethane
Just like foaming the same materials, different manufacturing processes will create different things.
Types of sponge sponge type is divided into polyester sponge and polyether sponge, polyester sponge is a high-pressure sealed foam, polyether sponge is a box-type foam.
Polyester sponge
Polyester sponge features: Rally strong, uniform pores, high density, the production of sponge stable performance, commonly used in electronics, automotive, printer supplies, precision instrument packaging, electrical appliances, a common compression sponge.