Window import? CE or RAL - What is important?

I specifically took a window fabricator with me to Turkey, he has been trained for 5 years and knows the subject well.

Winsa windows

Winsa windows
GU, HOPPE installed
Triple glazed, Uw=0.85
84mm profiles, 7 chambers,
4-12-4-12-4

I bought my windows for 1/3 of the price

Expensive fun to take the window installer along and look at everything together on site.

So a purely Turkish product. There must be a reason why the windows have no European certification. That would be an absolute dealbreaker for me, just like the lack of access to a Turkish company if (I think when, not if) defects become apparent.

No, not at all. This is a Belgian company. You can google it, good - very good reviews.
Deceuninck Germany GmbH
sorry, I forgot to write it, CE, RAL, EN, ISO, TSE all present for windows. I think there is no CE for roller shutters, and it is not needed for them.

That alone says nothing about the quality of the windows.

Is it now good or bad (because it was only 2/3 cheaper)?
I am also currently collecting offers for windows (14 windows, 1x PSK - total approx. 34sqm plus electric roller shutters). The pure prices for the material range between €6,500 (directly from Poland, sold and installed by a German company) up to €21,000 (local window installer) - almost all offers are VEKA Softline 82 MD windows. You can also get cheap windows in Germany with a German contact person. It will not be the cheapest provider for me either. The overall package must be right and in this case the window installer, who is also the fitter and contact person, is worth a few extra euros to me.

I have 12 window offers, from the Czech Republic, Hungary, Poland, Bosnia and DE. Price range €40,000 - €75,000.
HS doors, 120sqm windows, additional window widenings due to balcony slope etc.

Since you apparently have already bought the windows, the die is cast.

Case from reality:
"In the Oldenburg area in Oldenburg, a window installer was commissioned in July 2015 to supply and install window and door elements including roller shutters for a residential house. For €16,200 gross. The window installer had the window and door elements produced and carried out the work. There were declarations of performance from the manufacturer for the windows. None for the roller shutters. Neither the windows nor the roller shutters had CE marking.

The window installer received his money.

But the client's pleasure did not last long. After a while, it looked like unclean welds, non-airtight windows and the like."

No, not at all. That is a Belgian company.

sorry, forgot to mention, CE, RAL, EN, ISO, TSE all available for windows.

What now? Import windows from Turkey or commission German companies? The one you mentioned is based in Germany (a subsidiary of the Belgians). But it has nothing to do with the company Winsa.

Huh? In the opening post, it was about importing Turkish windows WITHOUT CE marking.

Winsa is still a Turkish manufacturer of profiles. Nothing Belgian.

To get back to your opening post. What exactly do you want to know from us here? Where do your windows come from now? Do they have a CE mark or not? In every post, you write different things.