... of asbestos Soovee sanded magnesium oxide board is our hot product,It is in accordance with enterprise'sstandard No.q/xtjc001 ... ,mildew resistance,mold resistance,earthquake resistance,Non-combustibility grade is Class A and fire resistance lasts 1-4hours,Chlorine ... content is less than 5% which is much better than Mation Standard No.JC688-2006.This is a technical revolution ...