... ign pr oduct .2.It is ni celooking resonable f l ame ,easy operation , qui ck heat ing and uniformity ... r, at the moment ,t he gre en show l amp is light ,the hea t ing tube begin towork,When ... rise the neededtemper a ture, the tempera ture cont rol l er auto cut off the power, at the sametine, ... theheat ing tube r esume to he a t, repeat l ike this , to ensure the temperature isconstant in the stated ...