Please capitalize where necessary: the new qsd quick hitch, grd detachable grab and swd rotating brushes are being exhibited at trade fairs throughout europe, beginning with bauma in germany on 11-17 april.
A: The new QSD quick hitch, GRD detachable grab and SWD rotating brushes are being exhibited at trade fairs throughout Europe, beginning with Bauma in Germany on 11-17 April.

Please capitalize where necessary: because of this website's clear and well-researched information, my sister had the courage to reject the advice of a nationally recognized lymphoma expert in 2006.
A: Because of this website's clear and well-researched information, my sister had the courage to reject the advice of a nationally recognized lymphoma expert in 2006.

Please capitalize where necessary: the boat had taken heavy damages.
A: The boat had taken heavy damages.

Please capitalize where necessary: the city of persepolis was now defenseless.
A:
The city of Persepolis was now defenseless.