Project Comprised of 26 ClearSign Core™ Process Burners in Four HeatersOrder Received from Birwelco USA Inc. for Fortune 500 Global Chemical Company TULSA, Okla., July 17, 2024 /PRNewswire/ -- ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions, announces that it has received the initial engineering order from engineer ...