... care to human body 3.6000h service life milky ir quartz tube heater lamp SiO2>99.9% Detail ... QA300W-600W400-600mm10mmXD-QB300W-600W400-600mm13mm Physical Properties of ir quartz tube heater lamp OpalescenceSiO2Heat ResistanceThe opaque quartz ... heater, cooking, oven, stove, baker, painting dryer, drying apparatus, dyeing, print, printer, copy machine, projector, sterilizing device, medical equipment ...