G. K. Tea industrial corporation manufactures quality air heater. It is supplied under the brand name of `ketco`. The single circuit davidson design and 5 pass heater reduces the drying cost of tea. It is adjusted with mechanical stoker for uniform feed of coal. It minimizes the consumption of coal. It has aerofoil impeller bladed fans to deliver hot air. The heater runs on coal or firewood. It requires minimum maintenance. It comes with following features: