| http://www.w3.org/ns/prov#value | - By charging a six-figure sum, these companies produce double-digit ROI for investors rather than force investors to speculate on the possibility that a customer's underwater venture will turn profitable.Consider the risk-adjusted returns: offshore energy services companies sell services to the likes of Shell, ExxonMobil, BP, and other energy firms whose natural resource assets are gaining in deman
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