China's Ministry of Commerce (MOFCOM) plans to issue new draft rules in the first half of this year giving the authority more say in global merger transactions that may have an impact on domestic customers. China is increasingly using antitrust rules to impose conditions on global deals, including the $35 billion merger of Switzerland-based miner Glencore Xstrata PLC . The ministry has reviewed about 750 merger proposals since the 2008 establishment of China's anti-monopoly law. Of those, MOFCOM blocked one proposal and imposed conditions on 21 others.

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