This tank is suitable for alcohol depositing of traditional Chinese medicine, oral liquid, foodstuff, health food, Chemical industry etc. It is special equipment for alcohol depositing, mainly for freeze concentrated of herbal drug-decoction or for depositing alcohol under normal temperature. It consists of elliptical heading with jacket, round barrel with conical bottom, three blades agitator and special micro-adjustment outer etc. Adding alcohol in TCM drug-decoction to make liquid with some alcohol degree, and then proceed liquid & solid separating at normal or low temperature freezing to increase the purity and clarity of extracting liquid. This equipment completely made by high quality stainless steel plate which has good corrosive-resistant performance and meet GMP standard. The surface is treated with sand grinding or mirrored.