MasterCard Inc. and American Express Co. declined as much as 4 percent.

万事达公司和美国运通股价下滑4%。

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MasterCard Inc (MA. N), is the world's second largest credit card network.

万事达卡公司是世界第二大信用卡商。

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A spokesman for MasterCard Inc. in China had no immediate comment on Visa's action.

万事达卡公司(MasterCard Inc .)驻中国发言人暂未对Visa的措施发表评论。

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The company is working on a trial with Mastercard Inc.

WSJ: RIM, Carriers Fight Over Digital Wallet

SHANGHAI Mastercard Inc. on Friday said it expects China to overtake the U.S. as the world's largest credit-card market by number of cards by 2020 because of the country's fast urbanization.

WSJ: Mastercard Sees Surge In China Credit-Card Use

MasterCard Advisors, a consulting arm of MasterCard Inc.

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