ROCKMAX magnesium cement backer board is made from magnesium oxysulfate cement, grade E mesh fiber and waterproof polymers, integrated light weight,fireproof, waterproof , flexible. ROCKMAX magnesium cement backer board is economic and durable, durability tested to EN 12467(fiber cement board standard). Highly recommend for decorative veneer substrate, ETICS substrate, aluminum composite board substrate, curtain wall substrate and stucco substrate etc. For more details: https://www.rockmaxboard.c...