... better fastness performance, used for plastics, coating, acetate fibre, polyamide Optical brightener EBF (FBA 185) (OBA185) Appearance: suspension ... used for brightening plastics, coating, acetate fibre, polyamide fibre, polyvinyl chloride fibre,etc. The foreign like product has Uvitex ... blending products of dacron or dacron and cellulose fibre, can adopt high-temperature high pressure dip method ...