Please capitalize where necessary: electrical insulators (excl. those of glass or ceramics and insulating fittings)
A: Electrical insulators (excl. those of glass or ceramics and insulating fittings)

Please capitalize where necessary: a few times well-meaning people have called us just a bit too late to keep them from losing a few hundred dollars and some time and being disappointed.
A: A few times well-meaning people have called us just a bit too late to keep them from losing a few hundred dollars and some time and being disappointed.

Please capitalize where necessary: the featured china guangdong led light tube manufacturers and listed here are sourced by the karnar lighting.
A: The featured China GuangDong led light tube manufacturers and listed here are sourced by the karnar lighting.

Please capitalize where necessary: can eu countries restrict access to their national volunteering scheme to nationals?
A:
Can EU countries restrict access to their national volunteering scheme to nationals?