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YSQ20A
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Product name: YSQ20A
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Product Type: YSQ20A
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 1、High strength of shell,waterproof,moistproof,corrodeproof,fine manufacturing,and stedy performance.
    2、Adopt reodymiun iron boton steel,electricity-sound exchange,efficient and wide frequency range.
    3、Confrom the standard of GB8108-1999.
    4、Match with siren for using.