Raw material :
Natural volcanic glass--------- A siliceous material.
Acid resistant oxidation ,Chemical stability is good, use for a long time not deformation, not change color .
Perlite Board( plasterboard) , New Natural and Environmental Protection construction material :
1. pure natural expended perlite
2.Sound absorption ----40db noise absorption by dry wall of 10mm perlite board on 7.5cm light stud without fiberglass or mineral wool filling.
3.Thermal Insulation
4.Fireproof ----non-combustible material, Grade A fireproof and fireproof limit of 4 hours and more.
5.Waterproof -----no distortion,soften, broken or color change in high moisture environment.
6.no distortion,they won’t be soft or color changed