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Product Origin:China
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Description:The ventilators need no electricity and is noiseless. It can long-time working soto clear the interior hotness, wetness and dirty gas, which is considered as environmental-protective products. The advantages of ventilators are as follows:1) No leakage2) Minimum packing measurement 3) Well-preserved products4) Effective gas drainage5) Strong structure and lowest faults rate6) Convenient