... 4.Appearance:Single pipe 5.ISO9001 passed The principle of the infrared lampsA long-wave infrared (far- ... 1-3 minutes, high energy radiation conversion efficiency of 60% -75%, hot and cold do not ... process control more flexible. Coated gold reflective layer of a single tube, the twin tube, efficient and ... durable, can be achieved more than 96% of the radiation efficiency, long service life, usually more ...