... various boards and the base operations of Fiber Cement Board,CRC Board,Magnesium Oxid Board,Mgo-Gypsum Board,WoodGrain Calcium Silicate Board,Glass Fiber Ceiling, ... Steel flooring and many other fire resistant,Sound absorbing, decorative board. sinkwang can make various kinds of sandwich boards as ... , calcium silicate boards and mgo boards as the side board, those are mainly for roof and wall use. We ...