Air Products and Chemicals, Inc. has a portfolio of products, services, and solutions that include atmospheric gases, process and specialty gases, performance materials, equipment, and services. It is a supplier of hydrogen and helium and operates in markets, such as semiconductor materials, refinery hydrogen and natural gas liquefaction. Its segments include Merchant Gases, Tonnage Gases, Electronics and Performance Materials, and Equipment and Energy. In November 2011, Fluor Corporation acquired Goar, Allison & Associates, a unit of Air Products. In February 2012, it acquired ROVI Cosmetics International GmbH. In March 2012, it acquired advanced adsorption technology assets for its Generated Gases product lines. In March 2012, it brought a new hydrogen selenide (H2Se) plant. In September 2012, it acquired an air separation unit (ASU) and integrated gases liquefier in Guiyang, China from Guizhou Kaiyang Chemical Co., Ltd.