1. GB/T8303-2013 Tea-preparation of ground sample and determination of dry matter content,2013
2. GB/T8304-2013 tea-determination of moisture content: Inspection and quarantine of people's Republic of China,2013
3. GB/T8305-2013 Tea-determination of water extracts content,2013
4. GB/T8314-2013 Tea-determination of free amino acids content: Inspection and Quarantine of People's Republic of China,2013
5. GB/T 8312-2013 Tea-determination of caffeine content,2013