1.cleaning without detergent or soap
2.size can determined by you

It can clean things with water no need detergent or soap,it is widely used

in kitchen,bathroom,floor,ceiling,sofa,car,office euquipmemt,etc.

Nano sponge also called melamine sponge,It is also can used for interior decoration in super market,gym because it is can

soundproof,so can made of acoustic panel. It is also can used in aviation field.

The size can determined by you.

Pls feel free to contact me for more information and sample.