Study on quality control of herbal material of paeony formula granule by near infrared diffuse reflection spectroscopy Odour correlation study during preparation process of Gastrodiae Rhizoma Formula Granule Countermeasures for promoting internationalization of Chinese materia medica by virtue of formula granule Comparative analysis between origin of cooked traditional Chinese medicine powder and modern formula granules Comparison on six active constituents between formula granule and traditional decoction of Rehmanniae Decoction of six ingredients Comparative study on different processes for Chinese materia medica Moutan Cortex and Cinnamomi Cortex formula granules containing volatile components