energy-saving, light-weight, sound insulation, water proof, fire proof, space-saving, and short construction time Raw material 1, Core ... beside the highway and railway,defence and enclosure wall.Fire-proof and earthquake proof for school,hotel, commercial condo bldg.’s wall and ... .88Sound insulation capacity in the air/Db ≥36 ≥42 ≥489Fire proof limit/h ≥2 ≥4 ≥410Heat transfer coefficient b/w/m2 ...