GTS-Welco Inc. is a Praxair Joint Venture company that provides customers with specialty, medical and industrial gases, gas equipment, welding supplies and cost saving technical services. It has 800,000 cylinders and more than 45 locations in the United States. GTS-Welco Inc. operates ISO 9001-2000 certified production facilities located in Morrisville and Allentown Pennsylvania with state-of-the-art capabilities for producing specialty gases. The company s users include research and development, as well as biological, environmental, pharmaceutical and other highly technical applications. It has distribution centers that stock a wide variety of gas products ranging from acetylene, argon, carbon dioxide, nitrogen, oxygen, various industrial gas mixes and liquid products.