1, Midium efficiency 2, ISO 9001-2000,CE,EN779 Certification, 3, washable,replaceable filtering material, 4,F5-F9 Product Character: 1, Aluminum frame and metal frame,2, Material: chemical material and class fiber material, 3, Efficiency: F5-F9.4, Usage: commonly-used traditional products with best service and good stability.5, Public used for many industrial area and houshold.Ankelin, for the ...
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