Material: Quartz Size: we can make it in any size. Long useful life Good spectral transmision High temperature resistance Gold coated Quartz Heater Quansheng Quartz Ltd. is the leading manufacturer and exporter of quartz tube, infrared quartz tube heating elements,e.g. Far infrared quartz heating tube,infrared halogen heating lamp, carbon heater lamp with different type,like U bend,circel,C type ...