From Nihon home page: As our company name suggests, our history...

From Nihon home page:
As our company name suggests, our history is deeply intertwined with that of the agrochemical industry in Japan.
In the early 1920's, Furukawa Electric Co., Ltd. conducted research on a by-product of copper refining at the Ashio Copper Mine managed by Furukawa Mining Co., Ltd.(now Furukawa Co., Ltd.) to successfully produce lead arsenate, the first agrochemical to be registered in Japan. This project was soon transferred to the Ooi Agrochemical Plant of Asahi Denka Kogyo KK. (now ADEKA CORPORATION) Subsequently, in 1928, the Agricultural Chemical Department of Asahi Denka Kogyo KK. and Fujii Seiyaku Co., Ltd. merged to form Nihon Nohyaku Co., Ltd. Japanese first agrochemical manufacturing company.
Since that time, as a corporation protecting food supply and greenery, Nihon Nohyaku has been working to revolutionize technology in its core area of business involving manufacture and sale of safe and superior agrochemicals. Furthermore, working from the basis of agrochemical research, development and manufacturing, we have been expanding our business in fields such as chemical products, pharmaceuticals and animal health products.