CAS: 25973-55-1 It is widely used for Unsaturated Polyester , PVC,Polyurethane and PolyamideLooking for ideal UV Absorber Manufacturer & supplier ? We has a wide selection at great prices to help you get creative. All the Benzotriazole are quality guaranteed. We are China Origin Factory of Plastic Additive. If you have any question, please feel free to contact us.