In 1988, Dang Yongfu used herbicides on corn for the first time. Compared with manual weeding, it was found that herbicides had side effects. Later, many methods were used to solve them, but failed.

In p>1995, Dang Yongfu founded Zhoukou Shuofei Chemical General Factory in Xihuaying Town, Xihua County, determined to carry forward the spirit of "mending the sky with women's snails" and "control the soil" like Jiao Yulu's sand control, completely changing the soil changes caused by the side effects of herbicides, and realizing grain production increase and food safety;

In p>1997, Chen Chang, a senior expert from Shenyang Research Institute of Chemical Technology, joined Shuofei to research and develop the prevention and control technology of herbicide side effects, and died of illness in the factory in 1998.

In p>2, Shuofei Chemical General Factory went bankrupt due to the broken capital chain;

In p>21, Dang Yongfu hired a responder to continue the product development of herbicide side effects prevention and control technology, and in that year, he unexpectedly developed the herbicide side effects prevention and control technology by applying the technical achievements of Chen Chang researcher.

In p>22, Henan Far East Pesticide Co., Ltd. was registered in Xihuaying Town, Xihua County to process experimental products;

23-24. Experiment in Qinghai;

In p>25, the experiment was carried out in Qinghai, and the product technology was upgraded, which can be used synchronously with herbicides.

In p>25, Naian trademark was named and registered with the State Administration for Industry and Commerce; Naian weeding safety additive applied for national patent;

In p>26, I participated in the official experiment in Heilongjiang Plant Protection Station;

In p>27, Xiaolin participated in Heilongjiang Provincial Plant Protection Association; Start China Agricultural Science and Technology 11; The company signed a strategic cooperation agreement with the Southern Strategy Marketing Management Training Company; Naian weeding safety additive passed the appraisal of the results organized by Henan Science and Technology Department; Henan Naian Agricultural Safety Co., Ltd. was established; The foundation of Naian R&D Building;

In p>28, Naian's patent certificate of herbicide safety additive was issued, and Hercules fertilizer accelerator was successfully developed; In 28, Xiaolin participated in the "Naian Product Promotion" of Ningbo National Plant Protection Association;

In p>28, Naian Company selected the site of Xihua production base;

In p>29, Henan Far East Pesticide Co., Ltd. was renamed as Henan Far East Bioengineering Co., Ltd.;

In p>21, Henan Naian Agricultural Safety Co., Ltd. was renamed as Henan Naian Biotechnology Co., Ltd.; Henan Far East Bioengineering Co., Ltd. undertakes the high-tech demonstration project of the National Development and Reform Commission;

In p>211, Henan Naian Biotechnology Co., Ltd. was established; In 211, 1 experts met and Naian demonstrated the results; Undertake the research on the national international patent strategy for pesticide residue degradation;

in p>211, naian co., ltd. production base was completed and put into operation;

In p>212, Naian Co., Ltd. signed a strategic cooperation agreement with Farmers Daily;

In p>212, Naian Co., Ltd. signed a cooperation agreement with Henan Agricultural University;

in p>212, Henan far east bioengineering co., ltd undertook the high-tech achievement transformation project of the Ministry of industry and information technology.

In 214, Dang Yongfu's lecture on the treatment of technical "polluted fields" in the United Nations attracted the world's attention

In 214, during his participation in the 6th Global Forum of the United Nations Alliance of Civilizations, he was received by UN Secretary-General Ban Ki-moon, President Ashe of the 68th General Assembly, President Nasser of the 66th General Assembly and President of the United Nations Alliance of Civilizations, etc.

On October 12th, 214, Dang Yongfu was elected to the Central Plains.

On November 1, 214, Dang Yongfu was elected as the director of China Ecological Civilization Research and Promotion Association;

On December 27th, 214, Dang Yongfu was elected as the Communication Fellow of the United Nations International Academy of Ecological Life Safety;

On January 25th, 215, Yongfu, the party of "China Rulers", won the 214 Person of Agriculture, Countryside and Farmers.

On July 12th, 215, Dang Yongfu "appeared" at the Royal Farm of Cambodia, and exchanged views with government officials and agricultural experts on soil pollution remediation and ecological management, and carried out technical cooperation.

On July 23, 215, the Ecological Agriculture Committee of the United Nations Organization for Ecological Security Cooperation officially landed in Henan.