GDP80-400s types dryer of our company dry clothes by the heat, which is produced by the heat exchanger. The machine has many advantages: Quick drying speed, steady rotating, little noise, dependable quality, simple operation, convenient to repair, etc. The heating system of the heating exchanger: (A) the steam heating, (B) the hot oil heating (heat-transmitting oil) (C) the electricity heating (D) the gas heating and (E) the fuel heating. Heating system is offered to the customer as per their requirement.