https://www.cityam.com/shell-and-china-national-petroleum-sign-gas-deal/
Shell and China National Petroleum sign gas deal
Mar 23, 2010 - ROYAL Dutch Shell and China National Petroleum Corp have signed a 30-year deal to develop natural gas in China, a day after launching a joint takeover bid for...
china national petroleumshellsigngasdeal
https://es.wikipedia.org/wiki/Corporaci%C3%B3n_Nacional_de_Petr%C3%B3leo_de_China
China National Petroleum Corporation - Wikipedia, la enciclopedia libre
china national petroleumcorporationwikipedialaenciclopedia