| 1876 | Toueisha was established for silk production | |
| 1943 | Nittoh Kogaku Kikai Seisakujyo was established. The company aligned with Nihon Kogaku and started manufacturing optical equipment. | |
| 1950 | Successfully developed Kominar lens, the company's own brand lens. | |
| 1951 | Incorporated into Nittoh Kogaku K.K. | |
| 1961 | Kamisuwa Plant was established in Kamigawa Area, Suwa City. Started manufacturing finished cameras. | |
| 1969 | Introduced integrated system for lens production. | |
| 1970 | Nittoh Kogaku Matsukawa Plant, an affiliated company was established in Kita Azumi District to expand lens production system. | |
| 1983 | Entry into the Optronics field including information equipment. | |
| 1994 | Camera Division awarded ISO9001 accreditation. | |
| 1996 | Established a joint venture, PT. ADIWIRA PRESISI INDUSTRI, in Indonesia with Mitsui & Co., Ltd. and the Astra Group of Indonesia for an integrated camera production system. | |
| 1999 | Optronics Division awarded ISO9001 accreditation. | |
| 2002 | Head Plant and Kamisuwa Plant awarded ISO14001 accreditation. Acquisition of Indonesia's Astra Group-held shares of PT. ADIWIRA PRESISI INDUSTRI, reorganizing the subsidiary into a joint venture between Nittoh Kogaku and Mitsui & Co., Ltd. in order to expand its production capacity. | |
| 2007 | Acquired total shares of Shoujoh Seiki Co., Ltd. (renamed Shoujoh Techno Co.,
Ltd. in 2012) and reorganized it into a wholly owned subsidiary in order to
strengthen our mold production capabilities. Renamed our Indonesian subsidiary to PT. Nittoh Presisi Indonesia. |
|
| 2008 | Acquired all shares of PT. Nittoh Presisi Indonesia, transforming it into our wholly owned subsidiary. | |
| 2011 | Founded a locally incorporated company, Nittoh (Singapore) Pte. Ltd. in Singapore. | |
| 2012 | Totally modernized and expanded our Matsukawa Plant to consolidate mold
production operations, and renamed it Azumino Plant. Established an additional
Indonesian subsidiary, PT. nittoh Batam, to further strengthen our overseas
production. Azumino Plant awarded ISO9001 and ISO14001 accreditation. |
|
| 2017 | Our company name changed to Nittoh Inc. | |
| 2025 | Absorbed and merged with Shoujoh Techno Co., Ltd. |