professional china negative ion powder, tourmaline powder and alkaline ceramic ball suppliers.

tourmaline powder,negative ions powder,alkaline ceramic ball supplier - MEICONG MINERALS CO.,LTD

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The effect of the negative ions

What is the usage of the negative ions pls see below two pictures compare. and the negative ions come from negative ions powder. it is natural minerals, and released negative ions forever.

negative ions powdernegative ions powder