... ) Fireproof. 5) Acoustics. PRANCE BUILDING MATERIAL CO.,LTD is a leading professional manufacturer of ceiling and ... your engineer. SupplierFoshan Prance builiding material Co., LtdCareerPRANCE BUILDING MATERIAL CO., LTD. is a leading professional manufacturer ... materialsperlite, mineral fiber, organic fiber, additive(some chemical stuff )Measures610x610, 610x1220, 595x595, 595x1195Thickness12, 13, ...