"Non-asbestos calcium silicate board has diffenrent flexibility on the basis of thickness. The application of these materiol are Non-flammalbe GB8624-2006 Grade A ( Fireproof ). After 24h, allowed in wet marks in the reverse, but no drops of water. After 25 times of freezing and thawing, not allowed to crackle, layered. non-asbestos calcium silicate board-fold