... compounded under low temperature condition. It possesses texture and appearance of natural sandstone, and is free from stain, blackening, moldiness ... . Stable dimension, low expansion rate, low contractibility 4. Natural appearance, uniformed color 5. Durable, long service life 6. Good ... it to darken or get moss, reduce its durability.The surface is made of Inorganic facing materials,processed by Mega' ...