'However', 'nevertheless', and 'nonetheless' connect two sentences and show an unexpected result to what has been stated in the preceding sentence. 'However' is the most common of these expressions, whereas 'nevertheless' and 'nonetheless' are more formal are generally used in written English.
However, we were able to speed up the production cycle during the recession.
However, the combined cost of raw material and labor was not the primary production cost.
Nevertheless, if we don't provide the fuel the industrial truck will stay in the garage.
Nevertheless, if the production index slips that is a key indicator.
Nonetheless, we are going to continue manufacturing inflammable blankets.
Nevertheless, we are going to hire a new production management team.