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全新芯片CH340CCH340C
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CH340GCH340CCH440GCH340T
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可代替340G内置晶振串口
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CH芯片原装正品沁恒微可以订货
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现货原装CH340B 422 440 444 455 551 552 554 9326 9328C 9329G
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CH340全型号转串口芯片量大从优
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USB转串口IC原装大量现货
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