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Forfaringssett vid blekning av cellulosamassa eller fraktion derav, anleggning for anvendning vid genomforandet av forfaringssettet och skruvpress, i synnerhet for anvendning vid forfarandet resp i anleggningen
Aparelho para tratamento de pasta de celulose,processo de tratar suspensao de material fibroso celulosico cominuido e conjunto depurador e chicana para um vaso de tratamento