LJ handheld particle counter demo video with subtitle.

Because different area have different English spelling accent and understanding.

So in order to make people understand our handheld particle counter better.

Our group made a vieo to demo it basic on amway air purifier.

particle counter video with subtitle and completely show the working principle, features, advantage and using instruction.

Please check this link to see video on Youtube: https://www.youtube.com/watch?v=dwLbit3nGLE

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