It is a special Gypsum Board® type which has the ability to hold X-ray rays and also has high sound insulation.
Product Standard: EN 520 – TYPE DF
Gypsum plasterboard is a horizontally applied carrier profile which is applied vertically in Gypsum Board and Wall Cladding Systems.
It is a fine-grained, flexible paste used for grouting and surface finishing.
It is used to protect outer corners against impacts and to obtain a smooth surface in drywall applications.