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GZL series ISO & CE certified vacuum freeze dryer as ideal freeze drying machine,Website:http://www.toptiontech.com, is widely used in biochemistry, pharmaceutical, food industry, etc, such as freeze drying enzyme, graphene freeze drying, hemostatic cotton freeze drying, cordyceps freeze drying, dendrobe freeze drying and penicillin bottle freeze drying,etc.1.Pre-Freezing and drying process are both finished on shelf.2.Silicon oil as circulation medium, with high accuracy of temperature control. Shelf temperature uniformity = 1? , with uniform drying effect.3.Shelf temperature adjustable, cont