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12-2014
"STC 54dB" rating Acoustic Steel Door Test PassedOur “Forbes” Single Leaf Acoustic Steel Door passed the ASTM E413-04 Sound Transmission Class (STC 54dB) Standard and Officially Launched into Market 
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12-2014
"STC 54dB" rating Acoustic Steel Door Test PassedOur “Forbes” Single Leaf Acoustic Steel Door passed the ASTM E413-04 Sound Transmission Class (STC 54dB) Standard and Officially Launched into Market
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