Application of superfine powder technology in TCM Optimization of processing technology and study on antioxidant activity in vivo of superfine powder of Granati Pericarpium Preparation and physicochemical properties of three kinds of superfine powder of Chinese materia medica Preparation and Characterization of Water-soluble Panax Notoginsenosides Stability of superfine powder of Fritillariae Thunbergii Bulbus, Gastrodiae Rhizoma, and Rhodiolae Crenulatae Radix et Rhizoma Micromeritics of superfine powder of Chuanxiong Rhizoma