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1>type A: Standard board B: Fire-resistant board C: Water resistant board D: Imperial size board 2>Gypsum board edge: A: tapered edge (recessed edge) B: square edge (straight edge) 3>Color of the surface protective paper: A: White ------usually for standard board B: Red ------usually for fire-resistant board C: Light green------usually for moisture resistant board D: Light blue ------ usually for moisture resistant board E: Other colors upon your detailed request. 4>Usage: A: Ceiling system, B: Partition system, C: Dry lining system 5> function: The property of our products is: fire resistant, moisture resistant, sound insulation, heat preservation, and so on. 
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Contact Info:
pingyi baier building materials co ., ltd
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gypsum 