Paharpur Cooling Towers Ltd. Offers Counter Flow Cooling Tower. Paharpur Cooling Towers Ltd. Is an ISO 9001 certified company. The company manufactures Cooling Towers and Air Cooled Heat Exchangers. The Counter Flow Cooling Tower comes under the brand name "Series CF-II", has poly vinyl chloride film type fill; glass reinforced polyester casing and fan cylinders. All materials used for Counter Flow Cooling Tower are chosen specifically for the cooling tower application. The framework is made of Steel Hot Deep Galvanised, with Glass Reinforced Polyester [GRP] Casing.