| 9th June, 1937 |
Started of business for production of boiler compound at Sukegawa, Hitachi City, Ibaraki. |
| 19th April, 1941 |
Foundation of ROKKU Chemical Products Co.,Ltd. |
| July, 1950 |
Moved to Megro Factory for production and sales of boiler compound for former Japanese National Railways |
| April, 1959 |
Kawasaki Factory started operations for manufacture and sales of inorganic industrial chemicals |
| January, 1965 |
Started production and sales of feed additive agents |
| January, 1970 |
Started production and sales of disinfectants and sterilizers for fomer Japanese National Railways rolling stock |
| December, 1972 |
Started production and sales of disinfectants for water-purifier tanks and swimming pools (pharmaceutical products) |
| February, 1977 |
Started production and sales of feed additives and feeds |
| May, 1991 |
Expantion and maintenace of feed additive and premix prodction facilities |
| March, 1992 |
Authorized to manufacture Poisonous and Deleterious Substances |
| August, 1995 |
Expantion and maintenace of feed additive and premis production facilities |
| August, 1995 |
Expantion and maintenance of disinfectant manufacturing facilities for water-purifier tanks and swimming pools |
| April, 1999 |
Started to import and sell the products of ANPARIO (former Agil→Kiotechagil) and ADM Protexin Limited (former Probiotics International) |
| March, 2000 |
Moved headquarters to Futago, Takatsu-ku, Kawasaki-City, Kanagawa Prefecture |
| February, 2006 |
Moved headquarters to head office location as of today |
| April, 2006 |
Discontinued Premix at Kawasaki Factory |
| May, 2006 |
Started production of Premix at Gotemba Factory |
| August, 2006 |
Started production of Chlorinating Agent at Gotemba Factory |
| May, 2007 |
Discontinued Chlorinating Agent at Kawasaki Factory and closed the factory |
| December, 2008 |
GMP for antimicrobial agent approval at Gotemba Factory (link to confirmation letter) |
| June, 2010 |
Cerebrates its 70th anniversary |
| March, 2011 |
Expantion of antimicrobial additive-free line and test production line |
| April, 2012 |
Antimicrobial additive line and New plant installed |
| June, 2015 |
Celebrates its 75th anniversary |
| January, 2017 |
New label printer installed |
| February, 2017 |
Expantion of automatic packaging line |
| July, 2018 |
"Good Manufacturing Practices (GMP) Guidelines for feeds and others" approval at Gotemba factory (link to confirmation letter) |
| July, 2019 |
ISO22000:2018 Approval (Gotemba Factory) |
| June, 2020 |
Cerebrates its 80th anniversary |
