The solar drying box is electric and solar heating source, accurate control of temperature, humidity. Box mounted wheel, flexible and easy handling. Simple operation, low noise, no pollution, is ideal for small drying equipment. The system uses a digital sensor to collect inside the three different point temperature. Using the temperature and the temperature difference to adjust the size of the heating current and the amount of humidity and wind. Multiple temperature ranges can be set for different types of control, free to the user control curve. Hot air inside the material in to quickly smooth flow, cycle. So that the material to be dehydrated and dried in a certain temperature and humidity environment, surface moisture is evaporated, it will be promptly taken away smooth heating and dehumidifying functions. Dimensions of the device model electric drying box type IV internal dimensions of 0.9m × 0.84m × 1.87m 0.7m × 0.60m × 1.72m input voltage 380V/220V Power 2.6kw thermal efficiency of 90% -95% temperature control range 0oC ~ 95 oC Humidity control range of 1% to 99% RH Temperature measurement accuracy ± 0.5% humidity measurement accuracy of ± 3% RH