With annual sales of $6.6 billion, Praxair, Inc. (NYSE:PX) is a global, Fortune 500 company that supplies atmospheric, process and specialty gases, high-performance coatings, and related services and technologies.

Praxair's primary products are:

atmospheric gases -- oxygen, nitrogen, argon and rare gases (produced when air is purified, compressed, cooled, distilled and condensed), and

process & specialty gases -- carbon dioxide, helium, hydrogen, semiconductor process gases, and acetylene (produced as by-products of chemical production or recovered from natural gas).

The company also designs, engineers and constructs cryogenic and non-cryogenic supply systems.