Electric drying oven is made of the box, temperature control systems, heating systems and heat circulation system structure.The box is made of high quality cold-rolled steel plate by punching and surface spray.The inner container is made of high-quality steel or stainless steel for users to choose. Between the inner container and the shell is filled with high quality rock wool for insulation. The center of the door is with tempered glass window,It is user-friendly to observe the interior materials testing at any time in the working room. Temperature control system adopts microcomputer chip processor, dual digital display, easy for users to view the setting temperature (or the setting time) and the measured temperature. And with PID regulation characteristics, time setting, high temperature protection, temperature correction, deviation alarm function, precise temperature control, function strong. Professional designed air circulation system in the working room.The heat from the bottom goes into the working room by the natural convection to improve the temperature of the indoor temperature uniformity.