Spray dryer is mainly used for the production of trace particle powders in universities, research institutes and laboratories of food, pharmaceutical and chemical enterprises. It has broad spectrum applicability to all solutions such as emulsions and suspensions, and is suitable for drying heat-sensitive substances Such as biological products, biological pesticides, enzyme preparations, etc., because the sprayed materials are only exposed to high temperature when sprayed into mist-like particles, they are only heated instantaneously, which can keep these active materials from drying after the active ingredients are not damage.