Airgas, Inc. is a supplier of industrial, medical and specialty gases, and hardgoods, such as welding equipment and related products. The Company is also a producer of atmospheric gases, carbon dioxide, dry ice and nitrous oxide and a supplier of safety products, refrigerants, ammonia products and process chemicals. The Company also offers supply chain management services and solutions, and product and process technical support across many customer segments. The Company operates in two segments: Distribution and All Other Operations. The businesses within the Distribution business segment offer a portfolio of related gas and hardgoods products and services to the end customers. The All Other Operations business segment consists of six business units which primarily manufacture and/or distribute carbon dioxide, dry ice, nitrous oxide, ammonia and refrigerant gases. In March 2014, the Company acquired Welding & Therapy Service, Inc.