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    • Multi-functional shouter

    • BSDOA-8I high-power loudspeaker

    • Portable Multifunctional Police Caller

    • Large-scale supply of PTO-610 lithium batteries for Hainengda Interphone Series

    • Police loudspeaker

    • Multifunctional Police Caller

    • Police shouters

    • Military Police Vehicle/Mobile Strong Sound Dispelling and Alarm Calling System

    • HHQ-50W High Power Multifunctional Caller

    • Speaker

    • High-power police loudspeaker

    • Police loudspeaker [amplification | recording | lighting | alarm]

    • 300HZ High Power Speaker

    • High power hand-held loudspeaker 30W hand-held loudspeaker

    • Police loudspeaker

    • Police loudspeaker

    • Hand-held loudspeaker

    • Hand-held Blue Speaker

    • 45W Wireless Remote Caller

    • Police microphone

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  • Vehicle-mounted video/shouting system

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