Main Features 1) PLC smart control & high automaticity. The performance of rotary dryer and moisture content of dry materials is automatically controlled in stable states. 2) High heat efficiency. The design of multiple circumferential flights combination and flow rate adjustment devices ensure the control of drying period and temperature distribution. The effect of insulation is as high as 70% and raise the heat efficiency by 20%. 3) Four wheel drive, more steady and stable. 4) Save 50% space compared with traditional dryers and reduce 50% civil investment.