... 2. Far infrared heating transmission, in medium wave, wave length range of 2.2-3.5 micron3. Health care & environmental ... resistance6. Max working temperature is 1300 °c; long term used under 1200°c7. 6000h service life, with SGS, RoHs approved8. ... Widely used in infrared heater, cooking, oven, stove, baker, painting dryer, drying apparatus, dyeing, print, printer, ...