Detailed Product Description Dried root was cylindrical, long 10 ~ 30 cm, diameter 1 to 2.4 centimeters. Significant vertical surface wrinkles, lenticel visible and slightly roll back, lateral extension. Quercus thin, brown-yellow or gray-brown, most broken out curl, easy to peel off and show a yellow smooth skin department. Quality hard and difficult to break, break thick fibrous surface. Cross- ...