[Class : 11] Thermic Fluid Heater, Steam Boilers,Incinerators,Furnaces, Boilers, Burners, Kils, Industrial Oven, Steam And Gas Generatiors, Industrial And Domestic, Waste Tretment Plants ,Water & Tretment Plants, Installation For Sanitition And Heat Recovery, Fuel Saving And Fuel Economising And Heating Installations Included In Class 11