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Molecular formula : MW : CAS :
nature : for papers, correspondence, diaries, books, forms and other exercise books of writing paper. White is smooth and fluent writing, good water resistance and other advantages. A, B, C, D grade four, the former for a long-term preservation of books and writing products, the latter three were for general use, such as exercise books. With bleaching of chemical pulp as raw material, or long Screen Machine-made copy machines, and pressure from light.
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