In ECO line dryers the incoming air is treated by filtration, dehumidification and heating, sent inside the processing chamber, pushed onto the product and finally, once saturated, expelled outside so as to obtain a continuous change. The dryers are equipped with an air treatment unit which reduces humidity and preheats it, so as to reduce energy consumption. A suitably studied system for the recovery and diffusion of the air guarantees its homogeneous distribution on each tray, with an alternating horizontal flow on both sides. Finally, thanks to the PLC it is possible to program three steps of temperature and duration of the work cycle, in order to be able to work any product, just as it is possible to set temperatures above 45°C to obtain crunchy products. All dryers are built with insulated paneling in food grade painted sheet metal and stainless steel diffusers.