Curtain wall companies have different patents.
At present, most large curtain wall companies have their own patents, and each company's atlas is different.
Column height is 120MM.
It is clear that the column height is120 mm.
Need to look at the curtain wall drawings in detail.
The 120 series of the same company also has a clear frame and a dark frame, so it is necessary to look at the curtain wall drawings in detail.