Chicago-based facilities maintenance distributor Grainger responded to a complaint filed in U.S. District Court in Eastern Wisconsin alleging the distributor had overcharged the U.S. government by charging more than the agreed-upon 26-percent markup as well as illegally relabeled products manufactured in non-trade agreement countries so they could be sold to the U.S. government. Grainger is required by contract with the General Services Administration to prevent product from countries that do not have reciprocal trade agreements with the U.S. from being offered for sale to government agencies. Grainger said: The company takes this allegation seriously. Although Grainger believes the company has fully complied with its contract, it intends to carefully review the allegations to …