... fluorescent tubes,with the following advantages:1,Radiating areainscresed by 2.5-4 times,the tube surface load increased by 1 ... power is reached at 1.5-2 times of the electric heating tube,reducing the cubageof the heating device greatly,saving the users ... -conditions and so on.Please see thefollowing table of Fin heating element specification,and the shape can be adjusted bycustomer requirement and ...