Identification of medicinal properties The rhizome is cylindrical, curved, branched, 4-9cm long, and 1-1.5cm in diameter. The surface is red-brown or dark brown, with fine longitudinal wrinkles and grayish-brown wavy links. The internode length is 0.5-1 cm, and there are round root marks below. Quality tough, difficult to break, cross-section gray brown or reddish-brown, fiber, endothelial ring more obvious, scattered vascular bundle point marks. It is fragrant and spicy. Less branches, red and brown color, strong aroma, spicy taste better. Cross section of rhizome: The epidermal cells are slightly tangentially elongated and the outer wall is thickened. In the cortex, there are more vascular bundles in the media, and the external ductile type is larger than the vascular bundle in the middle column; the inner cortex is obvious. There are a large number of externally flexible vascular bundles in the column, with small and dense vascular bundles in the near-endothelial layer, several in a ring, and vascular sheath fibers forming a ring, wall thickness, non-ligninization and micro-lumbering. Most of the secretory cells scattered in parenchyma, containing yellow or red-brown resin-like material; parenchyma cells full of starch grains. Powder characteristics: purple brown. Starch granules have a single pod shape, kidney shape, oblong shape, water chestnut shape or long oval shape, length 24 ~ 44 (~ 93) μm, diameter 8 ~ 27μm, umbilical point, short slit or trigeminal, biased at one end Or located in the middle, the stratification is not obvious or faintly visible; the complex grain consists of 2 to 8 grains, occasionally half multiple grains. The secretory cells were broken, and the complete ones were round or oval in shape, with a diameter of 40-48 μm, a slightly thicker wall with pits, and cells containing orange-red or brown-red resin. Thin-walled cell walls are slightly thicker and have a class of circular pits; occasionally, small calcium oxalate crystals are found. Ladder, reticulate and thread catheter diameter 18 ~ 56μm. In addition, there are fiber and polygonal scale leaf epidermal cells. Sometimes we can see the root of the endothelial cells, often scattered in a single, narrow and long-shaped, the end of a truncated or slightly sharp, long 120 ~ 200μm, diameter 22 ~ 27μm, the wall is very thick on three sides, one side is thin, there are four sides thickening, non-wood It is also evident that the ditch is clear. Dental Sterilizer,Podiatry Sterilizer,Dental Sterilization,Dental Sterilization Equipment ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com