Which method is used for heating the hot press at present?

The specific answer given by the hot press manufacturer is: The heating work of hot press was directly heated by inserting electric heating rod into the hot pressing die or hot pressing plate. Although it has the advantage of less heat loss, the heating is uneven and the electric heating rod is easy to be damaged. Therefore, the heat transfer oil heater is used to heat the hot pressing die or hot pressing plate indirectly, which can avoid the above shortcomings and problems, but the heat loss is slightly larger.