... Character,1), Light in weight, high in hardness;2), Natural stone,non-polluting, non-radioactive;3), Acid resistance, Corrosion resistance;4 ... materials instead of ceramicite,haycite etc.2), Landscape: Big pumice arts can be put in garden or yard as a beautiful ... jeans,clothes etc.4), Used for hollow brick blocks, grinding stone feet, light aggregate etc.Color: Red,Brown,Black and white ...