China Oil And Gas Group Limited, an investment holding company, primarily invests in natural gas and energy related businesses in the People's Republic of China and Canada. The company operates through four segments: Sales and Distribution of Natural Gas and Other Related Products; Gas Pipeline Construction and Connection; Exploitation and Production of Crude Oil and Natural Gas; and Production and Sales of Coal Gasification and Other Related Products. It is involved in the piped city gas business, as well as design and construction of gas pipelines; and the transportation, distribution, and sale of compressed natural gas and liquefied natural gas. The company also develops, produces, and sells crude oil and natural gas, and other upstream energy resources; constructs and operates gas pipelines and natural gas stations; and provision for finance, as well as involved in the trading of natural gas and related equipment. In addition, it operates natural gas stations for automobiles. The company serves approximately 1,765,241 residential users; and 15,602 industrial and commercial users. China Oil And Gas Group Limited is headquartered in Causeway Bay, Hong Kong.