Corel Pharma Chem manufactures Swellable and Permeable Coating Polymer. Corel Pharma Chem also manufactures various types of film coating and enteric coating polymers. The Swellable and Permeable Coating Polymer, also known as Colorcoat FC4W, is used in Film coating of tablets, pills, pellets and granules. The Swellable and Permeable Coating Polymer gives excellent, glossy and shine film layer. This Coating is available in different colors. This Coating is swellable and permeable at any pH.