The vacuum dryer consists of the vessel body, the cover and the heating pipes, which is mainly used in drying and sterilization of materials in the fields such as pharmacy, foodstuff and chemistry. The equipment features reliable performance and easy operation, which is in accordance with the GMP requirements. It is made of carbon steel, with inner lining made of high-quality stainless steel. Its external insulating layer is fully covered and sealed by stainless steel plates.