Today I would like to recommand to you our strong product - Optical brightener CBS-X ( CI 351 ) which is equivalent to Ciba's Tinopal CBS-X. It has excellent whitening effect in detergent,soap and washing powder. Odyssey CBS-X has perfect durability against chlorine/oxygen bleaching, strong whitening strength, and good solubility in water under low temperature. If you are interested in it, we can provide you the most competitive price in the current market