Haoyuan centrifugal glass wool board also has two categories，i.e.facing-free board and compound facing board. These board are manufactured by adding thermosetting bond into glass wool and then subjecting the glass wool to pressurized treatment and heated solidification.Compared with glass wool felt,glass wool board has better and stabler noise absorption performance.These products are widely used in industry,exterior heat preservation system of residential buildings,air conditioning,and some other fields.