The concentrator is applicable to concentration of traditional Chinese medicine, Western medicine, glucose, starch, monosodium glutamate, dairy and chemical industry etc. It is especially suitable for low temperature vacuum concentration of heat sensitive substances. It can carry out continuous sterilization and concentration. After carefully calculated and precisely designed and improved by pro-fessional designers of our company, it has more features and benefits than the original one. The period of being heated of materials is short and the evaporation temperature is low. It has small influence on the products' color, flavor and nutritious content, which is especially applicable to concentration of milk etc. heat sensitive substances.