s:
1. Cooling speed: 20-30 minutes to reach required temperature of refrigeration preservation .
2. Uniform cooling: the product surface free of water vapor takes away their own heat to achievecooling goal, and realizesuniformlycooling from the inside to out.
3. Clean and health: Under a vacuum environment, can be bactericidal or inhibit bacterial growth, prevent cross-contamination.
4. The thin-layer drying effect: the preservation of epidermal damage or inhibit expansion and other effect.
5.