Polyester based textile products such as Polyester Staple Fiber(PSF), Partially Oriented Yarn(POY) require Masterbatch Concentrates to provide colours such as White & Black. These Colours are provided by White&Black PET Based Masterbatches. In Addition to this, several Additive concentrates contain UV , FR are added to provide special properties like UV/FR resistance to the Fiber/Yarn. Optical Brightener Concentrates are added to improve the brighteness of the Fiber/Yarn in the final application.