Building plaster as the raw material,the manufacturing of fire-resistant drywall uses special-made protecting paper and proper amount of water-proof additives are properly added through special production process.Refractory materials and a large number of glass fiber are added in the panel core,you can see a lot of glass fiber from the cross section if you cut the plasterboard open.Alkali-free glass fiber with good fire resistance is selected for high-quality fire-resistant drywall.
Generally,medium or high-alkali glass would be selected for ordinary products,which is especially suitable for ceilings,partition walls,elevators,safe linings and stairway passages,as well as the outer wrapping fire protections of columns and beams with high fire resistance requirements.