CAS NO.1533-45-5 Optical Brightener OB-1 is kind of plastics additives can absorb UV light then emit visible blue light to reduce the yellowish and make the products more white. Optical Brightener OB-1 mainly used in whitening of polyester and plastic, as well in whitening of Nylon during polymerization,also used in ABS, PS, HIPS, PA, PC, PP, PET,EVA, PVC, etc.
Fluorescent-Brightener-393 with cheap can be wholesale and buy from RAYTOP factory - made in China. RAYTOP is one of the advanced Fluorescent-Brightener-393 manufacturers and suppliers in China. Our Fluorescent-Brightener-393 are made in China and have been exported to many countries, including Germany, Italy, Canada, South Korea, Japan, Indonesia, Vietnam, India, Pakistan, South Africa, Middle East, etc. Also, we have established long-term cooperative relations with numerous domestic famous Optical Brightening Agent. RAYTOP Fluorescent-Brightener-393 factory has cheap and in stock, we can offer free sample and customized service for you.