"Tiefengtang" originated from the 1840, rebuilt in 2010, is a long-established Zhejiang, China dendrobium officinale road real estate industry leading enterprises. Tiefengtang has been handed down in an orderly way. Kang Youwei once wrote the inscription "family of traditional Chinese Medicine" , Jiang Shunan once wrote the inscription "Tiefengtang" , and Hu Xueyan himself went to the door to purchase the company, which is located in the foothills of Yandangshan Geopark, the core region of the genuine medicinal materials of dendrobium officinale. There are more than 1,000 mu of dendrobium candidum near wild planting base in Yandangshan Geopark, more than 1,000 mu of dendrobium candidum in Yueqing, more than 10,000 mu of Guizhou planting base, more than 5,000 square meters of Dendrobium candidum tissue culture seedling plant, and 3,000 cubic meters of intelligent cold storage, one GMP processing plant, two product quality testing centers.