Base material Melamine foam/Sponge, Magic Eraser Color Gray / White / Pink/Other customized Eco-friendly ROHS certificate by SGS authority.No harmful materials to body. Common size 100x70x30mm,120x60x20mm,100x100x50mm,2500x700x200mm,2500x1200x350mm according to your size. Density 8.5-10kg/m³ Usage Wall, Ceiling Sound Absorber, Suspend Sound Absorber, High End Filling.Household cleanings, Ktichen cleanings, Car Washing, also used an oil remover in the painting industry.building industry Packaging 1.Bulk Packing + Carton 2.OPP Bag + Carton 3.PVC Box + Carton 4.Customized Acceptable 5.pcs/pack, bulk packed in PP plastic