There may be several reasons why the Apple 5 Watt slow charger does not have an Apple icon:
The Apple 5 Watt Slow charger is produced by a third-party brand without Apple's official authorization and certification, so there is no Apple icon.
The Apple 5 Watt Slow charger is a fake product, not a genuine product, so there is no Apple icon.
The production batch of Apple 5 watt slow charge head is older and does not have an Apple icon. It should be noted that if the Apple 5 watt slow charger is a fake and shoddy product, there may be security risks, it is recommended that consumers buy genuine chargers from regular channels.