This standard specifies terms and definitions, quality evaluation index, quality control index and control value, test method, marking, requirements of quality inspection and trading, and technical requirements of quality evaluation and control in the contract of commercial coal trading
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This standard specifies the classification and corresponding naming and coding for content of mercury on dry basis w (Hgd) in coal, as well as the limits of mercury content in coal production, processing and utilization〖WTBZ〗.〖WTF2〗〖KH1D〗
This standard is applicable to coal exploration, production, processing, marketing and utilization
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