The DNFTB electric heating heater uses graphene heating material, which saves more than 60% of costs compared to traditional heating materials. It is an electric heating fan mainly used in workshop buildings or belt conveyor corridors to transport hot air. Its characteristics are: large output air volume, up to 8500m3/h, outlet temperature of 45~95 ℃, and can be adjusted in sections by oneself. The effective power can reach 15-45Kw, voltage: 380V. The heating effect is significant and can be controlled in sections. The air volume and temperature can be adjusted. The overall structure of the warm air blower is reasonable, without the need for prefabricated cement foundations, and can be placed freely. It is allowed to be hung in the air at an inclination angle for use