authorization letter

File Info : application/pdf, 1 Pages, 157.71KB

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            [url] => https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=4676542
            [href_text] => authorization letter
            [href_description] => GuangDong Substanbo Technology Co., Ltd. SIFI2 TWS headphone 2AS9DSIFI2 2AS9DSIFI2 sifi2
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            [description] => authorization letter
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            [submissionDate] => 2020-04-05 00:00:00
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            [title] => 
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