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tel: 0575-88322482 88321669
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the advantages of spiral duct

nine advantages:
1) product support good, high standardization;
2) closed strong;
3) the ventilation loss is small;
4) to facilitate factory testing;
5) anti-balanced external pressure (negative pressure) program;
6) material province;
7) the installation cost is low;
8) install the overall layout of appearance;
9) routine maintenance easy to clean.



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