Sandwich type panel structure, the middle of flame retardant and heat insulation and noise reduction material, has the fire performance of A0 class.
三明治夹层式面板结构，中间加阻燃隔热降噪材料，具有A 0级防火性能。
Sandwich type panel structure, the middle of flame retardant and heat insulation and noise reduction material, has the fire performance of A0 class.
三明治夹层式面板结构，中间加阻燃隔热降噪材料，具有A 0级防火性能。
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