Need. The action process of the vacuum packaging machine for monosodium glutamate is to put the bag containing the product into the vacuum chamber, cover it, start vacuumizing, exhaust the gas, and seal the bag mouth, and the whole process is over. Vacuum crystal boiling pot is used to refine monosodium glutamate. Its advantage is that the evaporation speed and feeding speed of the solution can be controlled to maintain a certain supersaturation of the solution for crystal culture, and at the same time, unsaturated solution is continuously introduced to supplement the dissolution quality.