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    2019-08-20 12:23:32

    it seems to be working pretty good. 👌 100% original product This air ion tester is designed for test high level concentration of negative or positive air ion.  It is effective to test the electric charge on the surface of textile by strict.  With it you can estimate whether the air ion generator or air purifier is working in good state.  Simple and small design, easy to carry,very easy to hang as a necklace. 

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    2019-10-15 06:42:18

    a good product with all accessories good for detecting negative ion bracelets and ion generator #thanks for re-shipment 😊

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    2019-10-15 06:37:21

    good negative ion detector with all accessories. thanks for re-shipment 😊

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