A.R. North America, Inc. Crane Pumps & Systems Davidson Tank Easy-Kleen Pressure Systems Ltd. Elmira Machine Industries / Wallenstein Vacuum Engine & Accessory, Inc. HotJet USA House of Imports Imperial Industries, Inc. ITI Trailers & Truck Bodies, Inc. KeeVac Industries Lincoln Center Manufacturing, LLC/Marengo Fabricated Steel Marsh Industrial Milwaukee Rubber Products, Inc. Moro USA, Inc. National Vacuum Equipment, Inc. Orenco Systems, Inc. Pik Rite, Inc. Pressure Lift Corporation Presvac Systems R.A. Ross & Associates NE, Inc. Robinson Vacuum Tanks Inc. Satellite Industries ScreencO Systems LLC Tank World Corp TankTec Transport Truck Sales, Inc. Transway Systems Inc. TSI Tank Services, Inc. Vacutrux Limited Vacuum Sales, Inc. VARCo Westmoor Ltd.