... elements do not paint, radiation rate stability, high temperature with no deformation, no harmful radiation, no pollution, high ... temperature of 500 ~ 580 Spectral range :2.5-6 microns (with a higher radiation intensity)3.Spectral emission coefficient: 0 ... fix terminal .5.Features: radiation rate stability, high temperature with no deformation, non-pollution, anti-corrosion, small thermal inertia ...