We are manufacturer and supplier of industrial and domestic iron removal plants and filters in Kolkata, West Bengal and others cities since 1967. We using to remove the iron in raw water by our patented catalytic filtering media. Catalytic filtering media is much more active and costlier than other ordinary filtering media. These acts as a catalyst and at the same time as a filtering media. These are assorted granules of 16-40 mesh size and of silica-manganese-iron etc. base. The media continues it's filtering ability for a longer time without losing oxidizing power. This we manufacture against our owned Indian patent developed in our Research Laboratories.