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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
E-mail: vikey@ gdhongze
silver black Electrophoresis: golden
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Shutter/Louver:
production and sales of adhesives
Top Quality Product Warranty Soundproof Tempered Glass Aluminium Security Folding Window Door comply with Australian standards on China WDMA Type:Bifold E-mail: vikey@ gdhongzeCertifications ACOUSTICS TESTED WINDOWS & DOORS Sound or acoustic performance of a window is measured by the weighted sound reduction index or Rw value. Rw values are determined by measuring the reduction in dB achieved where a window is used to insulate against a sound source. The Rw value will increase as the acoustic performance of a window improves, so that a window with an Rw value of 40 has a signi cantly improved acoustic performance over a
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