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'fibrous'
China GB Standards List

 GB/T 742-2018  
fibrous raw material, pulp, paper and board—Determination of residue(ash) on ignition at 575℃ and 900℃

造纸原料、纸浆、纸和纸板-灼烧残余物(灰分)的测定(575℃和900℃)

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