... -QB300W-600W400-600mm13mm Physical Properties of electric quartz heater tube OpalescenceSiO2Heat ResistanceThe opaque quartz tube transmitting rate ... advantage of infrared quartz tube heater as bellow:1. Infrared radiation in instant heating and the transmissivity of ... service life, with SGS, RoHs approved8. Widely used in infrared heater, cooking, oven, stove, baker, painting dryer, drying apparatus ...