... .Compared with fluorescent tubes,with the following advantages:1,Radiating areainscresed by 2.5-4 times,the ... tube surface load increased by 1.5-2times.With the virtue ofwarming fast,high ... a limitation of heatingdevice,the power is reached at 1.5-2 times of the electric heating tube, ... under control. We will cooperate with the customs at home and abroad by using our sincere and excellent ...