1. The specifications of the plug can be seen from the printed logo on the plug.
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2, the formal qualified plug has the specifications of the plug (voltage, current) printed in the prominent position of the shell, to know the specifications of the plug, as long as you find the printed logo on the plug.
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3, the plug on the specification identification, different brands have different methods, some by the plastic mold engraved letterpress characters, some silk screen characters. There are laser printing words and so on