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fireproof board(is "pearl calcium plank",one kind of construction & building & decoration material, used as what plywood/particle board, gypsum board, calcium silicate board, magnesium oxide/magnesia board do, but is more superb
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fireproof board(is "pearl calcium plank",one kind of construction & building & decoration material, used as what plywood/particle board, gypsum board, calcium silicate board, magnesium oxide/magnesia board do, but is more superb
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