Bayer AG is a German chemical and pharmaceutical company founded in Barmen (today a part of Wuppertal), Germany in 1863. It is headquartered in Leverkusen, North Rhine-Westphalia, Germany and well known for its original brand of aspirin. The company was 150 years old on 1 August 2013.

Bayer MaterialScience is a supplier of high-tech ­polymers, and develops solutions for a broad range of applications relevant to everyday life.

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