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This video is about rice drying and Storage technology. It contains three parts— grain drying, grain storage, and Q&A. 

To begin with, the first part is grain drying. Grain drying is the process or the operation to make the moisture in the materials evaporating and reduce the moisture content of materials. There are four methods of drying grain— grain drying under the sun, heat air grain dryer, low temperature calculation grain dryer, and mechanical ventilation, each has its benefits and disadvantages. Mechanical heat drying method can quickly dry. Low temperature calculation method has low initial investment and energy use. Mechanical ventilation method can also save energy.