... , closed, high thermal efficiency, save energy, the effect of forced ventilation, drying evenly. Source can be steam or ... , is general-purpose drying equipment. 2. The scope of application: Hot air circulation oven for pharmaceutical, chemical, food ... -curing, and dehydration. Such as raw materials, Chinese Herbal Medicine, extract, powder, granule, powder, dehydrated vegetables and so on. 3. Details: ...