Appearance: A sealed plastic bag containing a translucent liquid with a metal sheet in it. For the sake of comprehensiveness, I will also add the "instructions for use" as follows.
Electric hot water bag company use: the bag of metal sheet gently bend, hot water bag manufacturers bag liquid that shows crystallization (blue translucent), hardened to solid. High temperature of 50 degrees (about 1 hour) or so.
Spare - after use, put into boiling water for 10 minutes, until the crystals completely back to the transparent liquid state, to be cooled, and then re-use.
The product can be used repeatedly in the above way.
In the hot summer, can be changed to cold treasure, such as the use of ice bags, anti-department cooling, but need to be frozen in the refrigerator before use. Hot water bag manufacturer in order to understand the "hand warmer" hand warming principle, we first need to understand the supersaturated (supersaturated) solution. At a particular temperature, the solution (solution) in the solvent (solvent) solubility remains unchanged, for example, when the room temperature, the solubility of salt (sodium chloride) is 36g/100mL.
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