It is a primer applied to the edges of the plate in drywall systems to prevent dusting.
Gypsum plasterboard is a horizontally applied carrier profile which is applied vertically in Gypsum Board and Wall Cladding Systems.
It is a special Gypsum Board® type which is resistant to impact, its strength, fire and water resistance and sound insulation properties have been increased. The front and back sides are covered with blue paper.
It is the main and intermediate carrier profile used in modular suspended ceiling systems.