ACM公司说他们对为了减少箱子的数量而对阻火圈进行嵌套包装很满意，但是必须放在托盘上。
ACM have said that they happy for the fire collars to be nested in order to reduce the number of boxes but must be on pallets.
防火林带阻火机理有三个层次：防火树种、结构合理的防火林带及其形成的火环境。
The fire resistance mechanism lies in three aspects, namely fire resistant tree species, rational construction forest belts and its environment.
阻火型除尘器以它独特的阻火技术，克服了常规脉冲袋式除尘器的弱点，延长了滤袋的寿命。
The fire resistant bag filter with fire resistant technology conquers the weakness of groovy impulse bag filter and prolongs the life of the filter.
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