<![CDATA[EC21 Product Catalogs - plastic whitener]]> <![CDATA[Optical Brightener for Plastics OB-1 OBA393]]> <![CDATA[Poly(Pentabromobenzyl Acrylate) FR-1025 PBT Flame Retardant CAS 59447-57-3]]> <![CDATA[Optical Brightener / Optical Brightening Agent FP-127/ Fluorescent Whitening Agent]]>