Apple Inc. said it was re-registering its products with a voluntary registry of green electronics, reversing course after a flood of criticism.

Apple, in an open letter from Bob Mansfield, the company's senior vice president of hardware engineering, said the company would relist its products on the U.S. government-backed registry, called Epeat, potentially putting an end to the controversy that led at least one city government to tell its employees no longer to purchase the Cupertino, Calif., company's products as a result.

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