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Appearance Design Patent Certificate: Handheld Megaphone (New Type)
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Appearance Design Patent Certificate: Handheld Megaphone (High Power 2)
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Appearance Design Patent Certificate: Handheld Megaphone (High Power)
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Design Patent CCertificate: Solar Loudspeaker
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Utility Model Patent Certificate-A Megaphone
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Design Patent Certificate: Handheld Megaphone (Solar)
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CQC certificate 2
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CQC certificate 1
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Design Patent Certificate: Folding Megaphone
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Utility Model Patent Certificate - A Battery Shrapnel That Is Easy To Produce And Assemble
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