Do we need a put a "to be verb" in one sentence if we have auxiliary verb "Would"?

And two more question for you if you don't mind.
I have just read in Longman dictionary that you do not use an article with uncountable or plural nouns, when you are talking about something in general.
1)Why did you use "The"
I would like to know exactly where the

Andrey NechaevI have just read in Longman dictionary that you do not use an article with uncountable or plural nouns, when you are talking about something in general.

That's true.

Andrey Nechaev1)Why did you use "the" in "I would like to know exactly where the factories are located?"

I was referring to s

Can i add to this sentence the word located?
I would like to know exactly where the nearest Norwegian cement factories are located?

Thanks a lot for answers.

You can, but it's redundant.