... n 双层结构 double-skin duct 双层管道 double-skinned metal sheet 双面层金属板 ...
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Our company mainly produced the double skin pre-insulated PIR duct panel and accessories with fire resistance to grade B1 (GB Standard) and VOC free in China in 2002.
我公司主要产品是应用引进的流水线，生产难燃B1级，无味、无挥发有害气体的双面铝箔聚氨酯复合板。
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