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Scalable microphone / Av equipment

Scalable microphone
Scalable microphone

By scaling, changes to the appropriate height, like this can change more suitable for speech, don't need to hold it up or bent down to speak,by use it and you can hold out a bosom give a speech.mitate the principle of umbrella, scaling, the microphone designed specifically for the classroom platform

University

Guangdong ocean university

Guangdong ocean university
zhanjiang, China

Huo Feng Chen,
Guangdong ocean university

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