Even if the tech giant's recent launch of the iPhone X spurs an unusually large upgrade cycle, meaningful growth in this segment can't persist forever. (fool.com)
Surprisingly large upgrade tree and non-trivial difficulty. (metro.co.uk)
Carbon capture and storage at large upgrading and refining facilities (e.g., the Shell Quest project) could result in significant reductions in oil sands CI. (greencarcongress.com)