Color Sanwich Panel 1.Building villas 2.industrial buildings 3.warehouses, cold storage, ... core layer of new building materials, with light, heat good, sound absorption and good sealing performance, easy construction period is short, comprehensive ... (mm): wall 1200,1150,950 Roof 950 4, the average sound volume: Thickness(mm)5075100150R(dB)20.0021.5023.0024.50 ...