Diatom mud, is a kind of mineral, it is lived hundreds of years a aquatic biological - such as plankton diatoms of sediment, diatom is a kind of algae in the sea of life, referred to as the "prairie" of the oceans, the cradle of life on earth is real, it and made 70% of earth's oxygen. Diatom deposition and after hundreds of thousands of years or even millions of years of mineralized formation of diatom ooze. Its main ingredients are: opal, 1-1.5%, iron oxide of alumina by 3-6%, effective decomposition of formaldehyde, toluene, ammonia and other harmful substances. Texture soft, porous, clearance rate of 90%, the porosity of the diatom ooze, 5000-6000 times that of activated carbon, heat resistance, above 1200 degrees smokeless, melting the prominent molecular lattice structure characteristics, determines its unique function, with a strong break hot, wet, ?