1)ATH: flame retardant,filler and Artificial marble 2)Size:25um 3)Pacakge:40kg/bag. 4)MOQ: 1MT 5)Whiteness:97% Aluminium hydroxide, Al(OH)3, ATH, sometimes erroneously called Hydrate of alumina, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three, much more rare forms, polymorphs: bayerite, doyleite and nordstrandite. Closely related are aluminium oxide ...