Antitrust officials in China’s Ministry of Commerce are concerned about the role SK Hynix Inc. will play in the sale of Toshiba Corp.’s memory chip business as the country commences a review of the deal, people familiar with the matter said.

Mofcom officials are looking at the fact that Hynix could take a sizable stake in the business if the sale goes ahead, the people said, asking to not be identified as they aren’t authorized to speak on the matter. Toshiba may need to offer some remedies to reassure the regulator that it won’t hurt competition, the people said. The ministry could impose conditions on a deal, they said.

China is the world’s largest market for semiconductors and the country is spending billions to build up its domestic industry. Hynix, South Korea’s second-biggest maker of memory chips, is part of a group led by Bain Capital that is buying the business from Toshiba for 2 trillion yen ($18 billion). The Icheon-based company is providing financing to the deal through convertible bonds that could give it as much as 15 percent of the voting rights in the business.

The ministry didn’t immediately respond to a faxed request for comment. Hynix declined to comment. Toshiba and Bain weren’t immediately able to comment.

Toshiba is selling its chip unit to repair a balance sheet battered by billions of dollars of losses from its nuclear energy operations. Bain’s group of investors also includes Apple Inc., Dell Inc. and Japan’s Hoya Corp. Tokyo-based Toshiba will retain a stake, and with Hoya Corp. will control a majority of voting stock, a solution that keeps control of sensitive technology in Japanese hands.

Last week, Toshiba and Western Digital Corp., a current partner in the chips business, settled a dispute over the sale that had threatened to derail a deal. The U.S. company dropped its arbitration claims after agreeing to invest alongside Toshiba in two new chip plants in Japan and receive a guaranteed supply of memory chips.