I am not saying that every panel is. I am just saying there are companies which do exactly what i claimed exists. In particular i was referring to Meyer-Burgers. This company was a developer of photovoltaic production machines which they sold around the world but they recently shifted to building and owning their own high automation "giga"factories and have plans to build them in various western countries producing premium, long lasting cells with top efficiency. Those panels are sold today too. By the end of 2022 they claim to >2.0 GW (with plans to extend it to 2.8ish GW) of solar panel manufacturing capacity which gives them 1.X% market share world wide. Since they are a publicly traded company we will learn whether they made it or not.
They also their own line of solar roof tiles in the pipeline.