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| COSL possesses the largest fleet of offshore oilfield services facilities in China. To date, COSL operated and managed a total of 27 drilling rigs of which 23 are jack-up drilling rigs one leased, and 4 are semi-submersible drilling rigs one managed, 2 accommodation rigs, 4 module rigs and 6 land dr... |
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The company＇s business operations has been expanded to Southeast Asia, Australia, Middle East, Nort...
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