Chemical products for preventing scale; Chemicals for use in purification of water; Chemicals for use in purifying water; Detergents for industrial use; Emollients for industrial purposes; Flocculants; Water-purifying chemicals; Waterproofing chemical compositions; Ceramic particles for use as a filtering media in the water treatment industry; Descaling preparations for industrial purposes; Descaling preparations, other than for household purposes; Mineral substances in the nature of filterin...