>>> The sources of Negative Ions <<<
The natural environment itself is the biggest existing negative ions releaser, and among the sources producing negative ions in the natural environment, mines are the biggest, about 80% of the negative ions in the atmosphere were released by it; other sources including the waterfalls and water drops, photosynthesis, the decomposition of the ozone layer in the stratosphere, the decomposition of ions in the air by the ultraviolet ray, or the friction created by lightning and thunder. The negative ions existing in the atmosphere mostly are the oxygen hydrogen negative ions, which possessed 95% of the negative ions in the natural environment.

It is known that the OH negative ions are the fountain of vitality to all the creatures; the more the OH negative ions exist in the air, the better the condition will be for animals, plants and human beings to live. It's because the OH negative ions provide the necessary nutrition for the creatures to self-healing and defense, so it's why it is called the Vitamin in the air.

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