Oba for Polyster, Oba Er-II, Oba 199: 1 manufacturer / supplier in China, offering Optical Brightener Agent 199: 1 (CAS No: 13001-38-2), Oba 199 Optical Brightening Agent, Liquid Optical Whitener Active Content 15%, Low Temperature Optical Brightener Agent 199: 1 Liquid for Polyester and so on.