Gypsum board (drywall) is used for covering interior walls, partition walls, suspended ceilings, and in some cases, flooring bases.

The chemical composition of gypsum board sheets includes:

1. Gypsum

2. Liner paper

3. Modified starch

4. Setting retarder for gypsum

5. Plasticizer for gypsum

6. Foaming agent used in gypsum board production