... of different sizes of clear or unclear quart Far Infrared Quartz Heater TubeResucerial Quartz Ltd is manufacturer and ... Quartz Electric Heater tube ,Far infrared quartz heater for thermocouples,lamps, heater, semiconductor,optical,oven and etc. industries in ... quartz heater component has strong transmission at far infrared, compared with other kinds far infrared products, when the wavelength >6Lj, ...