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The radiation-proof earphone with Germany and China patents, and authorized by the International Bureau of PCT, the world's first radiation-proof earphone!
The radiation-proof earphone far from the speaker set, a 200-300mm of the acoustic transmission line speaker of the magnetic field and the phone cut off from sources of radiation.
Secondly, from the physical principles on the analysis. Attenuation characteristics of electromagnetic waves and the distance is inversely proportional to the squa |
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