Rock Wool Sandwich Board is a kind of material for building insulation, the production process is mainly of two kinds, one is the factory prefabricated finished plate, one is made of composite site. Factory prefabricated finished plate is usually composed of three layers of material: the surface material for metal plate, the middle layer for rock wool, the bottom material for moisture layer. In the production process, first of all, rock wool and moisture-proof layer pressed together, and then the metal plate covered on top, and finally cutting and finishing, forming a finished plate. The precast finished plate can be directly installed on the purlins, the installation process is simple, using socket-type and hidden nail-type nails, will not damage the product surface. On-site composite panels will need to be installed on-site. First, the rock wool and moisture-proof laminates pressed together, and then the metal plate covered in the top, and finally cutting and finishing, forming a finished plate. This plate needs to be installed on site, the installation process through labels and construction drawings to determine the location of the plate, by lifting the plate installed on the wall, nail fixed.