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usb temperature control + full capacity 2w power bank (dc port heating height 10 degrees) usb constant temperature + full capacity 2w power bank (dc port heating high 10 degrees) usb electric car universal temperature adjustment usb electric car universal constant temperature usb temperature adjustment usb constant temperature 48v-72v universal adjustable temperature four batteries 48v five batteries 60v six batteries 72v special adapter see picture remarks usb tram adapter usb temperature control cable tram temperature control line

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