humidity indicator card for electronic
Introduction:
Humidity indicator card is suitable for the product package of closed environment, its color is reversible, which is when how much humidity the packaging environment is, the indicator card corresponding point will change color, and when the humidity is lower, the color will return again. It has different changes in different environments, so it is uncertain that how long the humidity indicator card can be used. In addition, it is of no great significance to know how long it will use from the operation principle. As humidity indicator card can be use disposable, so we don’t recommend use humidity indicator card in another product package after using it in original product package.
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