Authentic Jiaozuo yam production sand / iron yam, the typical purple "rust" yam join, hard like "iron" hence the name of mucus thick iron yam investment, less water, adequate nutrition. Distinguish between a yam, first round (with a big round head) 2, color depth (skin color brown or purple red rust) 3, dense hair (hair protruding eyes yam agents, hair density, hair and more long hair) 4 fingers thick (generally associated with general adult finger thickness) 5, uniform (uniform thickness, not thin intermediate rough two) if you eat the skin is very thick, it must be a fake yam yam Wenxian, but also note that the amount of one day remained at around 3-4 two, eat easy to get angry. Said yam is good, but there is nothing to prove or record it? Today to tell you about the history of yam proof. "Wen County," and the Qing Dynasty, "Agronomy Series" has documented yam, it is edible, medicinal aspects are worth. 1, the State Pharmacopoeia Commission editor, Chemical Industry Publishing House "People's Republic of China Pharmacopoeia" 2005 edition of a (p. 21). 2. Shanghai Science and Technology Publishing House "Chinese Dictionary" (p. 166). 3. Chinese Medical Science and Technology Publishing House "Chinese Dictionary" Volume (page 502). 4. Ming Li, People's Medical Publishing House published "Compendium of Materia Medica" (p. 1676). 5. Guangming Daily Press, published in 1990, "Wen County," (p. 407). This is the ancient times, scientists sort out the results of the test reports, which can be sufficient to prove the medical value and medicinal value of yam, we can according to their own needs nourishing. Fraternity yam _ Prince Zhuang Zhonghe (certified) _ yam by Prince Johnson County fraternity CCAC cultivation of professional cooperatives. Prince Edward County village fraternity CCAC planting cooperatives (www.jztzzzh.con) Henan Jiaozuo, a leader in agricultural processing, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Prince Zhuang Zhonghe leadership with the staff warmly welcome all inquiries negotiations to create the Prince Zhuang Zhonghe a better future.