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Wikipedia

Interpublic Group of Companies:

The Interpublic Group of Companies, Inc. (IPG) is one of the big four global advertising holding companies (the others being Omnicom, WPP and Publicis). It is headquartered in New York City and is the parent company of advertising and marketing services agencies around the world.

Interpublic:

埃培智集团有限公司（Interpublic Group of Companies, Inc. (IPG)、中国大陆翻译为“埃培智市场咨询”），世界四大广告传播集团之一(其他三家为宏盟集团、WPP集团和阳狮集团)，总部在纽约市。