Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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NY/T 889-2004 Determination of exchangeable potassium and non-exchangeable potassium content in soil 90.0 via email in 1~3 business day valid
NY/T 1121.20-2008 Soil testing—Part 20:Method for determination of soil micro-aggregates distribution 120.0 via email in 1~3 business day valid
NY/T 890-2004 Determination of available zinc manganese iron copper in soil -- extraction with buffered DTPA solution 105.0 via email in 1~3 business day valid
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