Please capitalize where necessary: a manufacturer of gu10 led lamp hight power spot light at guangdong china.
A: A manufacturer of GU10 led lamp Hight power spot light at GuangDong China.

Please capitalize where necessary: this castle ruin is definitely worth a visit.
A: This castle ruin is definitely worth a visit.

Please capitalize where necessary: this end-user license agreement including its annex ("eula") applies to you and teamviewer gmbh ("teamviewer" or "we") for the licensing and use of our software, which includes the teamviewer software and all versions, features, applications and modules thereto ("software").
A: This End-user License Agreement including its Annex ("EULA") applies to you and TeamViewer GmbH ("TeamViewer" or "We") for the licensing and use of our software, which includes the TeamViewer software and all versions, features, applications and modules thereto ("Software").

Please capitalize where necessary: nightlife is low-key there's a small bar and club scene, there's also the world-famous opera house and the casino, but night-time activity focuses generally on what visitors most want to do, which is simply hangout, have dinner and a drink or two in one of the most romantic settings on earth.
A:
Nightlife is low-key there's a small bar and club scene, there's also the world-famous opera house and the casino, but night-time activity focuses generally on what visitors most want to do, which is simply hangout, have dinner and a drink or two in one of the most romantic settings on earth.