AL HAYA
Arabian Company For Oils & Derivatives (Masafee)
AVISTA OIL AG
Benzoil Pty Ltd. Catalana de Tractament d’Olis Residuals S.A. (CATOR)
Heritage Crystal Clean Inc. Lwart Environmental Solutions
PURAGLOBE Inc. ReGen III Corporation
Safety-Kleen Systems Inc. Southern Oil (PTY) Ltd. STR Tecoil Oy
TAYRAS A.S. Veolia Environnement SA
Vertex Energy Inc.