auto-burning air heater

Model NO.: RDER-5 Oil BurnerHeat Transfer Surface: Tubular Heat Exchanger Structure Material: Metal Material Purpose: HeaterPrinciple: Recuperative Heat Exchanger Fuel: CoalBurner Brand: RDER Export Markets: Global Auto Oil-Burning Heating Machine, Features as per following: 1)Heating area: 300/600/1200 square meters. 2)Stainless steel combustion chamber, thermal conversion as high as 90% 3)Stainless steel exchanger is made of 321 (1Cr18Ni9Ti) stainless steel plate, tube. 4