China Oilfield Services is a Beijing-based petroleum company founded in 1955.
China Oilfield Services (COSL) is a company founded on January 1, 2001, incorporated in China. Operating within the petroleum industry, COSL has its headquarters located in Beijing, China. The company is traded on the Shanghai Stock Exchange and the Hong Kong Stock Exchange under the stock symbol 2883.HK. As an organization, COSL is considered to be both a company and an organization.
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