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7.5 inch T-type double-sided electronic table card conference ink screen table card paperless wireless intelligent bluetooth seat card

[Source Manufacturer] Intelligent Electronic Ink Screen Word Machine Student English Word Card Word Learning Machine

[Source manufacturer] 10.1-inch full-color TFT electronic price tag pricing machine supermarket tag advertising video playback

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[Source Manufacturer] Ink Screen E-Book Reader Android Supports SD Card to Expand WIFI Connection + Bluetooth