What is this symbol?
What does this symbol stand for? Sometimes there’s a 10, like ona charger, other times a 20 like on my hard drive.
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that is is the RoHS symbol that represents the product meets the obligations of China that began on March 1, 2007. The number gives the Environment Friendly Use Period (EFUP) value in years. So, in your case a circled 20 indicates an EFUP of 20 years.
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