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three advantages: 1 ion penetration effect: release negative ions, via the skin penetration, neutralize affected part ionic, and adjust biological current, 2. local heating effect: can make the affected part peripheral temperature increases 0.5 degrees ~ 1 degree, can produce a g...
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three advantages: 1 ion penetration effect: release negative ions, via the skin penetration, neutralize affected part ionic, and adjust biological current, 2. local heating effect: can make the affected part peripheral temperature increases 0.5 degrees ~ 1 degree, can produce a g...
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