| 1963 |
Established Shinkou Chemical Co., Ltd. Began manufacturing and selling surfactant-related products. |
| 1963-04 |
Establishment. |
| 1964 |
Developed and launched the commercial liquid neutral detergent 'Mysoft'. |
| 1971 |
Changed the company name to Shinkou Chemical Industry Co., Ltd. |
| 1972 |
Developed and launched commercial solid fuel. Opened a Tokyo sales office and entered the eastern Japan market. |
| 1976 |
Entered the commercial dishwasher cleaning agent division. |
| 1977 |
Developed and launched the commercial high-concentration liquid neutral detergent 'Sarasen'. Introduced computers. |
| 1978 |
Developed and launched the chlorine-based bleach 'Niitakabrich' and the powerful alkaline detergent 'New Chemicool'. Started QC circle activities. Established a Kyushu branch office (now Fukuoka sales office). |
| 1978 |
Developed and released the chlorine bleach "Nihitakabridge" and the powerful alkaline cleaner "New Chemicool". |
| 1978 |
Initiated QC circle activities. |
| 1978 |
Opened the Kyushu branch office (now Fukuoka Sales Office). |
| 1980 |
Constructed a factory in Settsu City, establishing new solid fuel manufacturing equipment. Replaced the liquid neutral detergent manufacturing equipment at the headquarters factory. |
| 1980 |
Constructed the Torikai factory in Settsu City and established new solid fuel manufacturing facilities. |
| 1980 |
Replaced the liquid neutral detergent manufacturing equipment at the headquarters factory. |
| 1981 |
Opened the Sendai branch office (now Sendai Sales Office). |
| 1982 |
Developed and launched the aluminum foil-wrapped film packaging solid fuel 'Kaen New Ace'. |
| 1983 |
Replaced the solid fuel manufacturing equipment at Torikai Factory. |
| 1986 |
Implemented TQC. |
| 1987 |
Received the Osaka Prefecture Quality Management Promotion Excellent Company Award. Opened the Hiroshima and Nagoya sales offices. |
| 1987 |
Received the Osaka Prefecture Quality Management Promotion Excellent Company Award. |
| 1987 |
Opened the Hiroshima and Nagoya sales offices. |
| 1988 |
Opened the Sapporo sales office. |
| 1989 |
Built the eastern production base, Tsukuba Factory, in Ryugasaki City, Ibaraki Prefecture. |
| 1993 |
Established the Japan Self-Washing Machine Maintenance Association. |
| 1997 |
Built the western production base, the state-of-the-art Biwako Factory, in Taga Town, Inukami District, Shiga Prefecture. |
| 2000 |
Obtained a license to manufacture food additives. Established subsidiary Japan Self-Washing Machine Maintenance Association Co., Ltd. |
| 2000 |
Obtained a license for food additive manufacturing. |
| 2000 |
Established the subsidiary Japan Self-Washing Machine Maintenance Association Inc. |
| 2001 |
Developed and launched 'Just Pack', a cleaning agent for commercial dishwashers. |
| 2002 |
Changed the company name to Niitaka Co., Ltd. |
| 2003 |
Listed on the Second Section of the Tokyo Stock Exchange. Obtained ISO 9001 certification. |
| 2003 |
Listed on the Tokyo Stock Exchange Second Section. |
| 2003 |
Obtained ISO 9001 certification. |
| 2005 |
Obtained ISO 14001 certification. Obtained a license to manufacture quasi-drugs. |
| 2005 |
Obtained ISO 14001 certification. |
| 2005 |
Obtained a license for manufacturing quasi-drugs. |
| 2006 |
Launched the 'Saniplan' cleaning agent brand for food factories. Absorbed and merged with subsidiary Japan Self-Washing Machine Maintenance Association Co., Ltd. Expanded equipment at Biwako and Tsukuba factories. |
| 2006 |
Launched the food factory cleaning agent brand 'Saniplan'. |
| 2006 |
Absorbed and merged subsidiary Japan Self-Cleaning Machine Maintenance Association Co., Ltd. |
| 2006 |
Expanded facilities at both Lake Biwa and Tsukuba factories. |
| 2007 |
Established Fujian Xintuo High Daily Chemical Products Co., Ltd. (now Xintuo (Fujian) Daily Products Co., Ltd.) in Fujian Province, China. |
| 2008 |
Developed and launched the high-concentration dishwashing detergent 'My Soft Conk' in pouch packaging. Completed the new headquarters building. |
| 2008 |
Developed and launched the high-concentration dishwashing detergent 'My Soft Conk' in pouch packaging. |
| 2008 |
Completed the new headquarters building. |
| 2009 |
Developed and launched the high-concentration oil-removing cleaning agent 'Kitchen Conk Cleaner' in pouch packaging. |
| 2011 |
Established subsidiary Yuhon Niitaka Co., Ltd. (now Mikker Chemical Co., Ltd.). |
| 2015 |
Designated to the First Section of the Tokyo Stock Exchange. |
| 2017 |
Acquired SuiShou Oil Chemical Industry Co., Ltd. (now Michel Chemical Co., Ltd.) as a subsidiary. |
| 2018 |
Established Nida Ka (Shanghai) Trading Co., Ltd. in Shanghai, China. |
| 2019 |
Established Shinkou (Jiangsu) Daily Goods Co., Ltd. in Jiangsu Province, China. |
| 2022 |
Merged SuiShou Oil Chemical Industry Co., Ltd. with Yuhonitaka Co., Ltd. and renamed the company to Michel Chemical Co., Ltd. |
| 2022 |
Transitioned to the Tokyo Stock Exchange Prime Market. |
| 2023 |
Acquired Keiyo Molasses Transport Co., Ltd. and BioBank Co., Ltd. as subsidiaries. |
| 2023 |
Transitioned to the Tokyo Stock Exchange Standard Market. |
| 2023 |
Made Keiyo Sugar Syrup Transport Co., Ltd. a subsidiary. |
| 2023 |
Made BioBank Co., Ltd. a subsidiary. |
