Enterprise GP Holdings L.P. is a publicly traded Delaware limited partnership and is listed on the NYSE under the ticker symbol “EPE”. The current business of Enterprise GP Holdings L.P. is the ownership of general and limited partner interests of publicly traded partnerships engaged in the midstream energy industry and related businesses. Currently, investments are held in Enterprise Products Partners, L.P. and Energy Transfer Equity, L.P. and their respective general partners. Enterprise Products Partners is a publicly traded North American midstream energy company providing a wide range of services to producers and consumers of natural gas, NGLs, crude oil, and certain petrochemicals. In addition, Enterprise Products Partners is an industry leader in the development of pipeline and other midstream energy infrastructure in the continental United States and Gulf of Mexico. Enterprise Products Partners is listed on the NYSE under the ticker symbol “EPD”.

Sinopec Zhenhai Refining & Chemical Company (hereinafter is abbreviated as ZRCC) is one of the flagship enterprises affiliated to Sinopec. With Zhejiang Refinery as its predecessor that dates back to 1975, the Company was restructured into Zhenhai Refining & Chemical Co., Ltd. and became listed on Hong Kong Stock Exchange in 1994. Responding to the integrated strategic plan of Sinopec, Zhenhai Refining & Chemical Co., Ltd. revoked its listing position in March, 2006 and in September of the same year, incorporated the Sinopec Zhenhai Refining & Chemical Company. Over the past thirty four years, following a philosophy of “Grow in Harmony, Share the Future”, taking the good opportunity of developing costal refineries and making full use of the favorable geographic location of Ningbo, Zhejiang province and the developed market in East China area, ZRCC has been maintaining a sound growth momentum through constant pioneering, progressing, reforming and innovating, making it grow into the largest refinery in China out of a small refinery of 2.5 million tpa.

Qatargas Operating Company Limited operates offshore in the North Field and onshore at Ras Laffan, a vast petroleum complex, where natural gas is cooled to a liquid form for easier transport by ship. The Middle East nation of Qatar is the world's #1 producer of liquified natural gas (LNG) and Qatargas, a subsidiary of Qatar Petroleum, owns a share of that rating. Qatargas Operating Company Limited produces more than 31 million tonnes per annum (mtpa) of LNG along with byproducts condensate, sulfur compounds, and helium. Qatargas' four trains, or plants, supply utility customers in Europe, Asia, and North America with Japan and Spain leading and China coming on fast. Major customers include CNOOC, Chubu Electric, and Gas Natural.

Seitel, Inc. is a leading provider of seismic data and related geophysical expertise to the petroleum industry. The data, which is used to locate oil and gas, primarily covers the Gulf of Mexico, the US Gulf Coast, and western Canada. Seitel, Inc. contracts with third-party seismic crews to gather data but handles the processing itself through its Olympic Seismic, Seitel Data, Seitel Matrix, Seitel Solutions business units. The bulk of Seitel's total revenues comes from the acquisition and licensing of seismic data. The balance is primarily generated by its Seitel Solutions subsidiary, which gives customers access to the company's seismic database. Main focus of Seitel, Inc. is at Onshore, offshore, and transition zone of the U.S. Gulf of Mexico, onshore East Texas, and Canada.

Black Raven Energy (formerly PRB Energy) is engaged in coal-bed methane production in the Rocky Mountains. Black Raven Energy, Inc. focuses on natural gas gathering and exploration and production. Black Raven Energy, Inc. exploration and gathering and processing operations are primarily located in the Powder River Basin. In 2007 PRB Energy was targeting reserves of about 100 billion cu. ft. of natural gas equivalent, before deteriorating finances hurt its expansion plans. Black Raven Energy, Inc. filed for Chapter 11 bankruptcy protection in 2008. In preparation to emerge from bankruptcy Black Raven Energy, Inc. reorganized as Black Raven Energy in 2009.

Energas Resources, Inc., Oklahoma oil and natural gas company is dedicated to developing energy projects for everyone's future. Energas is currently working on properties in Kentucky, Oklahoma and Wyoming. Operating through Energas Resources, Inc. A.T. Gas Gathering Systems and TGC subsidiaries, Energas Resources, Inc. is primarily focused on exploring and producing in the Arkoma Basin in Oklahoma, and the Powder River Basin in Wyoming. Energas Resources has proved reserves of 22,143 barrels of oil and 1.9 billion cu. ft. of natural gas. In 2007 Energas Resources, Inc. sold most of its assets in the shallow Devonian Shale natural gas strata in the Appalachian Basin of Kentucky. President George Shaw owns about 24% of the company. Energas Resources, Inc. was incorporated in 1989 and is based in Oklahoma City, Oklahoma.

United Refining Company is an independent refiner and marketer of petroleum products. We fuel cars, trucks, airplanes, and farm and construction equipment, as well as the homes and industries in one of America's largest concentrations of people and commerce. Our market includes Pennsylvania and portions of New York and Ohio.United was founded in 1902 in the cradle of the world petroleum industry. From the start we have cherished a role of independence in an industry that has been dominated by the giants. For over 100 years we have remained a free and innovative force in the marketplace, helping to bring the benefits of healthy competition to the people of our region. United owns and operates a modern, fully equipped refinery. While primary emphasis is placed upon maximizing yields of motor gasoline and distillate fuels, the refinery produces a full range of petroleum products. In addition to unleaded gasoline, our products include kerosene, diesel fuel, Number 2 home heating oil, industrial fuels, liquefied petroleum gas (LPG), propane, and several grades of asphalts.

Tuscany Energy Ltd. that was founded in 1990s and has gone through numerous changes, its latest one in 2009 with the amalgamation with Goldmark Minerals Ltd. Tuscany Energy Ltd. the oil and gas exploration company. Tuscany Energy Ltd. is focused on acquiring production-based properties for exploration and development operations within the Western Canadian Basin. Tuscany Energy Ltd. two core properties are in the Evesham and Macklin areas situated in west-central Saskatchewan, which produce 162 billion barrels per day of oil and 468 million cubic feet per day of natural gas. Most of Tuscany's revenue comes from its gas production. Tuscany Energy Ltd. bought Goldmark Minerals in 2009, hoping the gold exploration and development company could help it finance its energy operations.

Itochu Enex is totally immersed in Japan's oil and gas markets. Itochu Enex Co., Ltd. operates two divisions which house more than 20 subsidiaries. The home life segment supplies liquefied petroleum gas (LP gas) to more than 1 million homes and businesses throughout Japan. Itochu Enex Co., Ltd. second division, formed from its previous car life and industrial materials divisions, operates full service gas stations and sells gasoline, kerosene, and oil to service stations. Additionally, Itochu Enex Co., Ltd. caters to the manufacturing, trucking, and shipping industries, selling them oil, LP gas, and coal, as well as secondary energy like electricity and heat, and industrial materials such as asphalt and cement. Itochu Enex Co., Ltd. was established in 1961.

The hunt for petroleum drives the Hunt family, which traces its oil interests back to legendary wildcatter H.L. Hunt. Petro-Hunt, L.L.C. controls Petro-Hunt, L.L.C. and Petro-Hunt International, L.L.C. (together known as the Petro-Hunt Group, one of the world's largest privately held independent energy concerns). Petro-Hunt, L.L.C. focuses on oil and gas exploration and production in the US. Petro-Hunt's other activities include gas processing, pipeline transportation and refining. Petro-Hunt, L.L.C. also controls Placid Refining Company, which operates a state-of-the-art 50,000 barrels-of-oil-per-day refinery in Louisiana. The Petro-Hunt Group, through the years, has also created separate stand alone companies in various sectors of the energy industry, some that have become the foundation for and/or substantial portions of other publicly traded companies.

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