• Citgo Petroleum Corp.
• Chevron Marine Products
• China Oil Coportation LTD
• China Oil International PTE
• Codelco, Chile
• Colbun – Chile
• COMEGO
• Conoco Phillips Company
• Colonial  Oil Industries, S.A.
• COPEC
• Dole Costa Rica
• DNP Internacional
• Dow Chemical
• DukeEnergy
• Ecopetrol, S.A.
• ED&F Man
• Enap Refinerias, S.A.
• ENARSA (Energía Argentina)
• Exxon Trading Interamerica
• Ensenada Internacional Terminal
• FINANCIERA RURAL- México
• Fraccionadora de Occidente
• Freepoint Commodities Trading and Marketing
• Chalmette Refinning LLC
• Gas del Caribe
• Gebe – St. Eustatius
• Geogas Trading Inc.
• Glencore LTD
• Granos El Porvenir – México
• Grupo TOMZA
• Guardian Marine Testing
• Gunvor, S.A.
• HapagLloyds
• Harken de Colombia
• Hocol – Colombia
• Petróleo Brasileiro, S.A. – Petrobras
• Petróleos del  Sur, S.A.
• Petropar – Paraguay
• Petroplus Marketing
• PEMEX Gas y Petroquímica Básica
• PMI Trading Limited
• PTT International Trading PTE, Ltd.
• PS International
• RECOPE – Costa Rica
• REFINDOMSA – Dominicana
• Ril USA (RelianceEnergy)
• Roullier Argentina
• Sargent Trading LTD
• Servicios Corporativos Aduanales
• Shell Western Supply and Trading
• SitheEnergyServices
• Statoil  Marketing & Trading
• Sun Ref. & Marketing
• Tauber Oil Company
• Taurus Petroleum LTD
• Terminal Marítima Altamira – México
• Tesoro Refining and Marketing
• Texas Gas & Oil
• Trafigura Global ServicesPvtLtd
• Transmerquim – México
• Tricon / Trichem – México
• UNIPEC
• Unopetrol – Centroamérica
• Valero Energy Corporation
• Vitol, Inc.
• Vitol , S.A
• WittracoDungemittel GMBH
• World Food Program
• Yacimientos Petrolíferos Fiscales Bolivarianos (YPFB)

• Aegean Bunkering (USA) LLC
• Agway Petroleum
• Aimcor
• Ameropa North America
• Ameropa AG
• Ameropa Duengemittel
• Amspec Services, LLC
• Almacenes Ind y Comerciales
• ANCAP – Uruguay
• Atlantic Trading
• Arcadia Fuel, Inc
• Arcadia Energy (Suisse),S.A.
• Astra Oil Company LLC
• Aspahaltos Trade, S.A.
• Bacardi Corporation
• Banque Paribus
• Blue Oil Trading LTD
• Braskem Incorporated LTD
• BG Group
• Brenntag Latin America
• Bershire Energy LTD
• Belize Energy
• Bominflot Bunker Oil Corporation
• BP North America
• Buckeye Fuel Services and Logistics
• Bunge Argentina
• Carib LPG Trading, LTD
• Casanova International Europa, S.L.
• Cammesa – Argentina
• Canfornav
• Castleton Commodities South America, S.A. (CCI)
• CEPSA – Spain
• Chemoil International PTE
• Cinque Terre
• Citizen Resources LLC
• Industria Sulfúrica, S.A.
• Interacid Trading, Ltd
• Imperial Oil
• Isusa – uruguay
• Koch Supply and Trading
• Litasco, S.A.
• Lubricantes LiquidMoly – Chile
• LUFUSSA – Honduras
• Lukoil Pan America, LLC
• Marquarie Energy
• Mercuria Energy
• MIRASCO
• Mobil Oil Corp
• Morgan Stanley Commodities
• Motiva Enterprises
• Murphy Oil USA Inc.
• Nalco
• Nitron International Corporation
• Noble Americas Corporation
• Novarco Ltd
• Novum Energy Trading
• Nustar Terminal – St. Eustatius
• NYK – Japan  container
• Occidental Crude Sales, Inc.
• Oil Test Marine Services
• Oxbow Carbon & Minerals
• Oxiquim
• OW Bunker
• Pacific Rubiales  Energy
• Panchita G de Navegacion
• PDVSA Petróleo, S.A.
• Península Petroleum LTD
• Petrobras America, Inc.
• Petrochina International (America), Inc.