... 3.heatly and eco-friendly 4.elegant designs and sizes 1.Raw meterials a .mineral cotton :picking up from the minuteness ... heating.Welcome to contact me to know more about the board .3.SpecificationthicknessDimension Corner treatment pattern10,12,14,15,16,18 ... star Lovely sworm Pinhole Sand surface Glacier Coffered 100%no-asbestos ceiling board