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Buy Direct From China Bi-Fold Windows on China WDMA
Product Display Product Display CONTACT US > Product Feature Product Feature Excellent Performance 1:sound insulation : RW>30DB 2:wind pressure Resistance: Third clsss(GB/106) 3:Air Permeation Resistance: Third class(GB/108) 4:Heat insulation Resistance: Third:2.8/(m2k),2.5W/(m2k),or below2.0w/(m2k) 5:water penetration: ...
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