1. -1- Praxair Business Confidential Praxair and Success of the Scientific Mobility Program January 24, 2013

2. -2- Praxair Business Confidential ♦ Largest Industrial Gas Companies in the Americas and in top three, globally ♦ Operations in over 50 countries with 26,000 employees ♦ Ranked in top 250 companies by Fortune magazine and 9 years on Dow Jones Sustainability Index ♦ 2011 sales of $11 billion Strategic Growth Platform ♦ ENERGY: Leverage technology, product and distribution capabilities to provide reliable, cost- effective supply to the energy sector ♦ ENVIRONMENT: Offer applications technologies that help customers reduce their environmental footprint and improve energy efficiency, product quality and/or yield ♦ EMERGING ECONOMIES: Play a leading role in modernizing industrial infrastructures by building world-class supply systems and offering advanced technologies Who We Are Industrial Manufacturer of atmospheric, process and specialty gases and high-performance coatings

3. -3- Praxair Business Confidential  Provided support for 10 Brazilian undergraduate STEM students to study at U.S. universities for two semesters, and to gain hands-on work experience through the Praxair Summer Internship Program.  Summer Internship Experience - 12-week projects with goals and milestones established through partnership with team and manager; incorporated monthly reports, mentoring, leadership presentations, and performance evaluations  Performance: All participants received good reviews; all recommended for interviews with W.M.  Next Steps: Telephone interviews completed and on-site interviews in January; Offers to follow based on recommendations and interest Brazil Scientific Mobility Program Positive feedback from Managers and Business Groups Praxair Business Groups have requested 10 SWB to fulfill some 2013 internship demand