... 30 years) Impact resistant 4.Low maintenance Calcium silicate boardWoersen board is a kind of new model construction board ... in office building,school,shop ,dwelling,railway,railway station ,bus station,airport,scientific organization ,restaurant,hospital,cinema,badminton , ... soakingNo water formed24 hNon-combustibilityGB 8624 :1997 Class A/Bending Strength ≥16 MPaREMARK: Please contact our technical ...