Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs) or fluorescent whitening agents (FWA) or Luminophores are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm). At United, we pride ourselves at being not just one of the top Fluorescent Whitening Agent Manufacturers in India but have also earned ourselves a place of repute in the International markets. We offer a wide range of Optical Brightening Agents for the textile industry and are always striving towards improving our manufacturing processes and technology. United Specialities (P) Ltd is amongst the largest manufactures of polyester Fluorescent Whitening Agents in India.