The freeze-drying technology is to freeze the solution into a solid state, and then sublime and separate the water vapor under vacuum conditions. The dried solute remains in the container, and its composition and activity remain unchanged. The form of freeze-dried beads can maintain the activity of enzymes/proteins to the utmost extent, and the freeze-dried beads have a loose network structure and are reconstituted quickly.

Advantages:
1. The freeze-dried solid pellets can be stored and transported at room temperature after being packaged, without cold chain;
2. There is no need to store at a low temperature before opening, fully free up the cold storage space;
3. All-component freeze-drying, no system configuration is required, to avoid loss of high-viscosity components such as enzymes, and greatly reduce transportation costs and preservation time.

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