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Emission standard of coalbed methane/coal mine gas

煤层气（煤矿瓦斯）排放标准

GB 21522-2024 is a current mandatory Chinese national standard for Emission standard of coalbed methane/coal mine gas. It appears in the Chemicals compliance cluster with a product safety focus and has an implementation date of Apr 1, 2025.

Applicability depends on product scope, certification route, competent authority notices and transition rules. Request a translation or verify source before using this record in a compliance decision.