Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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SH 3173-2013 Specification for design of wastewater recycling in petrochemical industry 660.0 via email in 1~8 business day valid
GB/T 32723-2016 Determination of soil microbial biomass - Substrate-induced respiration method 110.0 via email in 1~3 business day valid
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