The parent company of a scandal-hit Chinese food supplier said it is withdrawing all products made by the subsidiary. Shanghai Husi Food Co Ltd, owned by Illinois-based OSI Group LLC, is at the center of a major food safety scandal, which has spread from China to Hong Kong and Japan, over allegations it mixed fresh and expired meat. In a statement posted on its website late Saturday, OSI Group said it would “withdraw from the marketplace” all products made by Shanghai Husi, and that it was conducting an internal investigation into current and former senior management.