... tube heater,carbon Fiber Quartz Electric Heater tube ,Far infrared quartz heater for thermocouples,lamps, heater, semiconductor,optical,oven and ... quartz heater component has strong transmission at far infrared, compared with other kinds far infrared products, when the wavelength >6Lj, ... emissivities: The quartz heater the component have no coating, and milky white quartz tube playing a radiation ...