Caigangyanmian sandwich panel and its production process to achieve at the factory by automated equipment to steel wool and rock wool composite board manufacturers as a whole, thus changing the previous scene composite rock wool plate required manner wool board offer , to meet the building insulation, sound insulation, fire and other requirements of the premise Anyang wool board, but reached a high quality, efficient, reliable, safe target. The product is widely used in Europe after already mature sound. Insulation resistance: thermal conductivity of rock wool sandwich panel is mineral wool insulation properties of = 0.043W / ㎡K as the basis for a thickness of rock wool core material obtained corresponding ratio is calculated. Sound-absorbing insulation effect is remarkable: