Mineral wool sound-absorbing board surface treatment forms rich, strong decorative plate. Surface treated knurled mineral wool board, commonly known as "caterpillars", the surface covered with shades, shapes, different pore sizes holes. Another "gypsophila", the surface of different depths of aperture. After milling forming three-dimensional mineral wool board, the surface made into small squares, different width stripes and other forms. There is also a relief-type mineral wool board, after the die-forming, beautiful surface pattern, the center flowers, cross flowers, walnut lines and other shapes, is a good decorative ceiling profiles.