1. Using dispersed air of high-performance air diffusion device, to maintain uniformity of drying temperature plastic to increase the drying efficiency 2. Unique hot air pipe designed to avoid Fenxie accumulated at the bottom of the heater, causing burns 3. Barrel and internal components within the all use stainless steel 4. hopper and the bottom of the separation of clean material convenient refueling quickly 5. using the proportional deviation indicates temperature, which can be precisely controlled temperature 6. has a double thermal overload protection, can reduce the resulting human or mechanical failure The accident 7. providing a variety of models can be pre timing device, microcomputer controlled, and double insulation barrel selection 8. full digital PID control LED status display 9. 0-99 hour timer automatically turn 10. to provide intermittent drying in order to achieve power saving purposes. (8-10 only SHD-DT series) 11. Transparent window magnet base.