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Airgas, Inc. is a supplier of industrial, medical and specialty gases, and hard goods, 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. It operates through two segments: Distribution and All Other Operations. The Distribution segment offers a portfolio of related gas and hard goods products and services to the end customers. The All Other Operations segment consists of five business units which manufacture or distribute carbon dioxide, dry ice, nitrous oxide, ammonia and refrigerant gases. It also offers supply chain management services and solutions, and product and process technical support across many customer segments. It markets its products and services through multiple sales channels, including branch-based sales representatives, retail stores and strategic customer account programs, among others.

CDI Corp. provides engineering, information technology and staffing solutions. The Company operates in three segments: Global Engineering and Technology Solutions (GETS), Professional Staffing Services (PSS) and Management Recruiters International (MRI). It provides staffing services through its MRINetwork of franchisees. The GETS segment provides engineering and information technology solutions that involve the production of deliverable work products or services performed at its facility or at a customer's facility. The PSS segment provides technical and professional personnel for discrete periods of time to augment the customer's workforce in times of project, seasonal, peak period or business cycle needs. The MRI segment is a global franchisor that does business as MRINetwork and provides the use of its trademarks, business systems and training and support services to its franchisees. It serves the oil, gas and chemicals, aerospace and industrial equipment, and hi-tech industries.