Recent years, macroporous resin gradually being a new material of purified technology. It can not only eliminate a great deal impurity, but also rich the effective component, so the new technology improves the quality of preparation of Chinese traditional medicine by exerting the advantage of lessening the dosage. In addition, with the superiority of getting out the damp of production, reducing the yielding cycle and eliminating the heavy metal's contamination, it gradually applies to the development of new...