It is a primer applied to the edges of the plate in drywall systems to prevent dusting.
It can be used in all kinds of wet volume and humid environment, water repellent properties of lightweight gypsum plate type with a smooth surface. The front side is covered with green paper and the backside is covered with grey paper.
In Gypsum Board Suspended Ceiling Systems; It is the profile used in floor and ceiling in walled wall cladding systems.
It is a fine-grained, flexible paste used for grouting and surface finishing.