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Monitoring and controls

"Gas Detection, Gas Monitors - Quatrosense Environmental Limited, QEL, manufactures gas... March 27-29, 2008. Toronto, Ontario. Booth 617. April 9-10, 2008. Edmonton, Alberta. October 14-16, 2008. Houston, Texas. January 26-28, 2009. Chicago, Illinois. Quatrosense Environmental Ltd. - QEL - Gas Detection, Monitoring and Controls, Combustion Analyzers and Flame Detection. See #1. "Gas Detection, Gas Monitors - Quatrosense Environmental Limited, QEL, manufactures gas... howstuffworks.com Convert Anything To Just About Anything Else www.onlineconversion.com Nascar www.nascar.com Quatrosense Environmental Ltd. - QEL - Gas Detection, Monitoring and Controls, Combustion Analyzers and Flame Detection. See #2. 1: http://www.dedesco.com [c1090329] 2: http://qel.dedesco.com [c1434107]