Civil HelicopterAirbus Helicopters, Aviation Industry Corporation of China (AVIC), Bell Helicopter Textron Inc, Enstrom Helicopter Corporation, Finmeccanica Helicopters, Kawasaki Heavy Industries Ltd, Korea Aerospace Industries Ltd, MD Helicopters Inc, Robinson Helicopter Company, Russian Helicopters JSC, Sikorsky Aircraft Corporation, HAFEI AVIATION INDUSTRY CO., LTD