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ما هى مقاومة الأسقف الجبسية للحريق بالساعات؟

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Question added by zakaria khamis
Date Posted: 2016/02/11
gilles elbhar
by gilles elbhar , Projectionist , Pathe Romandie / Europlexe

1 ساعة، وهو شرط نموذجي للعديد من المباني.

 

 

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