渤海商品交易所免费开户，加入乌金采富俱乐部服务多多，上海考尔煤炭电子交易有限公司(英文缩写SCOAL) 经上海市工商行政管理局及国家信息产业部批准登记注册成立的煤炭类电子交易市场。

国家煤炭工业网是中国煤炭工业协会唯一门户网站，也是国家政府上网工程中唯一代表煤炭行业的信息网站。网站即时向煤炭企事业单位和社会公众提供煤炭行业权威的各类信息服务。

Welcome to Saudi Aramco, a fully integrated international petroleum company with the world's largest oil reserves.

We are the world's largest publicly traded international oil and gas company, providing energy that helps underpin growing economies and improve living standards around the world.

伊朗国家石油公司（NIOC）是在1951年伊朗宣布石油实行国有化的背景下成立的，总部设在德黑兰，代表政府主管石油工业各方面的业务活动。公司下设6家子公司，分别为伊朗国家海洋石油公司、钻井公司、油轮公司、石油产品公司、卡拉有限公司和国家石油工程与开发公司。另外还有一家附属于伊朗国家石油公司的Naftiran国际贸易公司。

Noticias e información sobre la industria petrolera venezolana.

Oil and gas exploration, Extracting oil and gas, Moving oil and gas, Making fuels and products, Selling fuels and products, Generating low carbon energy, Working responsibly.

We are a global group of energy and petrochemicals companies with around 101,000 employees in more than 90 countries and territories. Our innovative approach ensures we are ready to help tackle the challenges of the new energy future.

Chevron works to meet the world's growing demand for energy by exploring for oil and natural gas; refining and marketing gasoline; producing chemicals and geothermal power and more.

Total est un des leaders mondiaux dans l’industrie du pétrole et du gaz naturel. Exploration et production, raffinage et marketing, gaz & énergies nouvelles, trading.