... strength superior), is flame-resistant the sponge (California 117, the British 5852 standards), the mesh filtration sponge (each kind ... of degree of hardness), the slow snapping back sponge, to regenerate the sponge, the oak to model the sponge (EVA, EPE, ... and intensive processing), the mold foaming model sponge, the intensive processing sponge, the compound sponge (the flame compound, gummy compound ...