Please capitalize where necessary: we are a professional led light factory.
A: We are a professional LED light factory.

Q: the jewish captors who killed the russian czar and his family, at the end of the first twentieth century war, quoted this precedent in a couplet "written on the wall" of the room where the massacre occurred; the nazi leaders, at the end of the second twentieth century war, were hanged on the jewish day of atonement.

A: The Jewish captors who killed the Russian Czar and his family, at the end of the First Twentieth Century war, quoted this precedent in a couplet "written on the wall" of the room where the massacre occurred; the Nazi leaders, at the end of the Second Twentieth Century war, were hanged on the Jewish Day of Atonement.

Q: all are highest 304ss or 316ss.
A: All are highest 304SS or 316SS.

Problem: in the case that your a file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit a file extensions.
Can you repeat this sentence, but capitalize it?
Answer: In the case that your A file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit A file extensions.

Text: a concise mechanism present in pl/sql allows programmers to relate cursor processing commands onto the dml (e.g. update and delete) constructs.

Correct capitalization: A concise mechanism present in PL/SQL allows programmers to relate cursor processing commands onto the DML (e.g. UPDATE and DELETE) constructs.

Text: situated just half an hour ride from nice and one hour from the italian border, monaco is a highly international and glamourous little country with a large amount of famous inhabitants.

Correct capitalization:
Situated just half an hour ride from Nice and one hour from the Italian border, Monaco is a highly International and glamourous little country with a large amount of famous inhabitants.