1.Fluorescent Brightener DT 2.High quality 3.Competitive price 4. A ... Brightener DT2.Key Words:Optical Brightening agent DT, Optical Brightener DT,Optical whitening agent DT, Brightener DT, Uvitex ER,ERN,Whitex ERN3.Appearance ... as example)Matching of dying liquid (k/L)Fluorescence whitener DT: 10-20Leveling agent 0: 0—1Disperse dye: 0.06 ... , heat; half a year valid period Fluorescent Brightener DT