Optical brightener absorbs UV lub teeb thiab remits lub zog no nyob rau hauv qhov pom ntau yam li xiav violet lub teeb, yog li ua rau cov nyhuv whitening hauv polymers.Yog li tuaj yeem siv dav hauv PVC, PP, PE, EVA, engineering plastics thiab lwm yam khoom siv qib siab.