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GB/T 41042-2021 English PDF (GBT41042-2021)

GB/T 41042-2021 English PDF (GBT41042-2021)

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GB/T 41042-2021: Guidance for utilization and classification of content of valuable elements in coal
This Standard specifies the scheme of content classification of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal and the related nomenclature and codes. It also puts forward the guiding principles for the development and utilization of valuable elements (aluminum, gallium, germanium, lithium, etc.) in coal.

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