... years. (2)Own facotry. (3) pass SGS,ROHS test Protected packing sponge:Products are widely used in the fields of chemistry ... , aquarium, autos and motors, sewage and petroleum treatment for filtering, protecting, decorating, straining, cleaning and others. Features: (1) color: various color ... . (3) Density: different density (4) It is environment product. (5) Packing: carton box often. Protected ...