Where did Ding Kundan come from in the national secret formula?

Dingkundan produced by Shanxi Guangyuyuan Chinese Medicine Co., Ltd. should be the national secret formula you mentioned. Guangyuyuan is located in Taigu County, Shanxi Province, one of the birthplaces of Shanxi merchants. It was founded in the 20th year of Jiajing in Ming Dynasty (A.D. 154 1). It has a history of 465 years since 2006, which is 128 years earlier than the North Tongrentang founded in 669. It is the oldest medicine number in China. At present, the registered capital is 36 million yuan, mainly engaged in the production and sales of traditional Chinese medicine and liquor. The main products are Guilingji and Dingkundan. These two products are rare treasures in the treasure house of traditional Chinese medicine and the wisdom crystallization of profound traditional Chinese medicine culture. Historically, it was exclusively enjoyed by emperors of Ming and Qing dynasties, which shows its preciousness.

Guilingji 1957 was listed as the first-class secret recipe of traditional Chinese medicine (one of the four secret recipes of traditional Chinese medicine in China, the first party), and was approved as a national protected variety of traditional Chinese medicine again in 2000. Won the National Quality Gold Award, China Famous Brand, Shanxi Famous Brand Products and many other honors. But as far as I know, the national secret formula of 1957 has expired and been cancelled. At present, there are only six national secret formulas of traditional Chinese medicine, namely: 1, Yunnan Baiyao (Yunnan Baiyao Co., Ltd.) 2, Tongrentang Angong Niuhuang Pill (Tongrentang) 3, Pien Tze Huang (Fujian Zhangzhou Pien Tze Huang Pharmaceutical) 4, Zaizao Pill (Guangzhou Qixing) 5, Liushen Pill (Lei) In addition, the national secret formula. General drugs have a patent protection period, during which his formula is unique, but after the protection period, other manufacturers can use this formula for free, which is why there are many Liuwei Dihuang pills and many Shuanghuanglian oral liquids on the market.

And the state secret formula of drugs, can always keep their own formula, never open, so there is only one kind of Yunnan Baiyao on the market, only one kind of Angong Niuhuang Pill. This keeps his uniqueness. Therefore, there are many companies that can produce formula Chinese medicine, so there will definitely be no national secret formula.