Established in 1940, Air Products and Chemicals Inc. deals in atmospheric gases, process and specialty gases as well as performance materials. The company serves numerous customers in the industrial, energy, technology and health care markets. It is one of the largest suppliers of hydrogen and helium in the world. Based in Liberal, Kan., Air Products and Chemicals Inc. conducts businesses in more than 40 countries worldwide through its subsidiaries. Additionally, the company offers polyurethane additives, polyurethane intermediates and personal care polymers.