Mineral wool board generally refers to mineral wool decorative sound-absorbing board. Made of granulated cotton as the main raw material with other additives and high pressure steam extrusion cutting, it does not contain asbestos and has good fire and sound absorption properties. The surface generally has irregular holes (commonly known as: caterpillar) or microporous (pinhole) and other kinds, the surface can be painted with a variety of color paste (factory products are generally white).