Hello, I've had to edit your post to reply, as something in the format of your post has prevented normal replies.

Window is correct. Even though there are lots of individual windows in the world that these things might be used on, we still use the singular form when we are talking about them in this context. It's no different to, say, car seats, car engines, car doors, car technologies. It doesn't matter that there are lots of cars.

I have a really urgent issue:   please, tell me - which is the correct form: window technologies or windows technologies (taking into consideration the fact, that we speak about wooden windows, not Microsoft Windows).   if I look up, e.g., company's web page: Window Technologies, LLC, I see that tehy use window technologies, window awnings, window groups, window products - as if plural, but singular?   Thank you in advance.     Latvia