core refining造句

The combination " will allow Basis to focus on its core refining business while monetizing a valuable asset,"
The combination also " will allow Basis to focus on its core refining business while monetizing a valuable asset, " said Basis Chairman Jeffrey R . Serra.
Under pressure from a dissident stockholder group and Wall Street, Ashland Inc . said Monday that it would cut spending on its core refining business and focus more on its other businesses.
It's difficult to find core refining in a sentence. 用core refining造句挺难的