DM Mitsui Sugar Co., Ltd.

1900: December: Founding of the predecessor, Taiwan Sugar Co., Ltd.

1946: July: New Japan Industry Co., Ltd. established.

1946: October: Company name changed to Daido Shokusan Co., Ltd.

1947: September: Shonan Sugar Chemical Industry Co., Ltd. founded.

1949: January: Company name changed to Yokohama Seito Co., Ltd.

Established Dai Nippon Sugar Co., Ltd. with domestic assets (capital 55 million yen).

1950: May: Company name changed to Tai Sugar Co., Ltd., inherited mainland assets of Taiwan Sugar Co., Ltd., and started refined sugar business and warehousing.

Stock Listing

1951: September: Listed on the Tokyo Stock Exchange.

1953: December: Listed on the Tokyo Stock Exchange.

1955: June: Joint venture with U.S. Charles Pfizer Co. to establish Tai Sugar Pfizer Co., Ltd. (now Pfizer Co., Ltd.), transferring the pharmaceutical division to the company.

Launched sugar containing polyethylene (small bags 1kg, 500g).

1961: October: Listed on the Osaka Stock Exchange.

1962: December: Sponsored by the Bemark Education Foundation and branded products with Bemark. [Osaka Sugar]

1963: December: Acquired a sugar factory in Thailand and established Shiba Sugar Thailand Co., Ltd. (now The Kumphawapi Sugar Co., Ltd.). [Shibaura Seito]

1970: November: Our company, Shibaura Seito Co., Ltd. (capital 1.3 billion yen, founded 1947), and Osaka Seito Co., Ltd. (capital 1 billion yen, founded 1940) merged, changing the company name to Mitsui Seito Co., Ltd. (capital 3.3 billion yen, headquarters: 2‑6‑4 Otemachi, Chiyoda‑ku, Tokyo, main plants: Shibaura, Kawasaki, Okayama).

Established Higashi-Nippon Sugar Co., Ltd. (now Shin Higashi-Nippon Sugar Co., Ltd.) in cooperation with Mitsubishi Trading Co., Ltd. and Meiji Sugar Co., Ltd. as a sugar manufacturing contract company.

Successfully developed seasonings using a proprietary enzyme decomposition method. Launched the Kokubesu series.

1972: December: Moved headquarters to 3‑8‑3 Nihonbashi-Motomachi, Chuo‑ku, Tokyo.

1973: May: Opened a new plant in Kobe (now Kobe Plant).

Delisting

1982: January: Established Mitsui Seito Foods Co., Ltd. and made the secondary product sales division independent.

Established Nishi-Nippon Sugar Co., Ltd. (now Kanmon Sugar Co., Ltd.) in cooperation with Mitsubishi Trading Co., Ltd. as a sugar manufacturing contract company.

1983: October: Suspended refined sugar production at the Kawasaki plant and renamed the Shibaura plant to Eastern Plant.

Established Nittō Co., Ltd.

Transferred all operations to Nittō Co., Ltd., established in February 1984, and resolved to dissolve.

Transferred all operations to Nittō Co., Ltd., established in February 1984, and resolved to dissolve. (Liquidation completed in June 1993)

1984: November: Began production and sale of functional sweetener "Parachinos".

1986: June: After approval for cancer-preventive drug manufacturing, began production and sale of raw material.

1992: August: Moved headquarters to 2‑8‑2 Nihonbashi-Motomachi, Chuo‑ku, Tokyo.

Liquidation Completed

1994: October: Absorbed Mitsui Seito Foods Co., Ltd. into the company.

2001: April: Merged with Shinmitsu Sugar Co., Ltd. and changed the company name to Shinmitsu Sugar Co., Ltd. The Chiba plant became part of our main facilities.

2002: September: Closed the Eastern plant.

2002: October: Consolidated production from the Eastern plant to the Chiba plant.

Completion of the immunosuppressant API factory.

Established the Taiyo Sugar Bio Production Research Institute through a company split.

2005: April: Merged Shinmitsu Sugar Co., Ltd., Taiyo Sugar Co., Ltd., and K&S Co., Ltd., and changed the company name to Mitsui Sugar Co., Ltd. The Kobe and Fukuoka plants became part of our main facilities.

Merged with New Mitsui Seito Co., Ltd. and K.S. Co., Ltd. and was dissolved.

2011: December: Established a Shanghai representative office in Shanghai, China.

2012: June: Consolidated Hokkaido Sugar Co., Ltd. as a subsidiary.

2012: July: Moved headquarters to 36-2, Nihonbashi Hakazaki-cho, Chuo-ku, Tokyo.

2012: September: Ceased production of refined sugar at the Okayama plant.

2014: April: Transferred part of the food ingredient business to Taiyo Techno Co., Ltd. (consolidated subsidiary) through a corporate split.

2014: December: Consolidated Nutrily Co., Ltd. as a subsidiary.

2015: June: Closed the Okayama plant.

2015: July: Consolidated Hirano-ya Co., Ltd. as a subsidiary.

2016: February: Established a Bangkok representative office in Bangkok, Thailand.

2018: October: Consolidated SIS’88 Pte Ltd and its subsidiary Asian Blending Pte Ltd as subsidiaries.

2019: February: Closed the Nagata plant and consolidated production of food additives to Taiyo Techno Co., Ltd. (consolidated subsidiary).

In April 2021, Mitsui Sugar Co., Ltd. and Dai Nippon Meiji Sugar Co., Ltd. merged through a share exchange, and Mitsui Sugar Co., Ltd. changed its name to DM Mitsui Sugar Holdings Co., Ltd. Additionally, through a split and absorption, part of the business was transferred to Mitsui Sugar Absorption Preparation Co., Ltd., which then changed its name to Mitsui Sugar Co., Ltd. and became a consolidated subsidiary of DM Mitsui Sugar Holdings.

Mitsui Seito Co., Ltd. will change its corporate name to DM Mitsui Seito Holdings Co., Ltd. Additionally, through an absorption split, part of the business will be transferred to Mitsui Seito Absorption Split Preparation Co., Ltd., which will change its name to Mitsui Seito Co., Ltd. and become a consolidated subsidiary of DM Mitsui Seito Holdings.

Through a full share exchange, Mitsui Sugar Co., Ltd. became the parent company and Dai Nippon Meiji Sugar Co., Ltd. became the subsidiary, resulting in management integration. Mitsui Sugar Co., Ltd. changed its name to DM Mitsui Sugar Holdings Co., Ltd. The company transitioned to a board of audit and other committees. : By absorption and split, a portion of the business was transferred to Mitsui Sugar Absorption and Split Preparation Co., Ltd. (consolidated subsidiary), which changed its name to Mitsui Sugar Co., Ltd.

2021: April: Completed a full equity exchange with Mitsui Sugar Co., Ltd. as the parent and DAI-NIPPON MEIJI Sugar Co., Ltd. as the subsidiary, resulting in a management integration. Mitsui Sugar Co., Ltd. changed its name to DM Mitsui Sugar Holdings Co., Ltd. Additionally, through an absorption spin‑off, part of the business was transferred to Mitsui Sugar Absorption Spin‑Off Preparation Co., Ltd. (consolidated subsidiary), which changed its name to Mitsui Sugar Co., Ltd. and became a consolidated subsidiary of DM Mitsui Sugar Holdings Co., Ltd.

Implemented a share exchange where Mitsui Seito Co., Ltd. became the fully parent company and Dai Nippon Meiji Seito Co., Ltd. became the fully subsidiary, resulting in a management integration. Became a consolidated subsidiary of DM Mitsui Seito Holdings Co., Ltd., which had changed its name from Mitsui Seito Co., Ltd.

2021 : 4月 : Implemented a share exchange where Mitsui Seito Co., Ltd. became the fully parent company and Dai Nippon Meiji Seito Co., Ltd. became the fully subsidiary, resulting in a management integration. Mitsui Seito Co., Ltd. changed its name to DM Mitsui Seito Holdings Co., Ltd. Transitioned to a company with an audit committee. : Through an absorption split, transferred part of the business to Mitsui Seito Absorption Split Preparation Co., Ltd. (consolidated subsidiary), which then changed its name to Mitsui Seito Co., Ltd.

In April 2022, DM Mitsui Sugar Co., Ltd. moved its headquarters to 26-16, 5-chome, Shiba, Minato-ku, Tokyo.

Due to the review of market classification by the Tokyo Stock Exchange, the company's shares moved from the First Section to the Prime Market.

2022: April: Moved our shares from the First Section to the Prime Market following a review of market classifications by the Tokyo Stock Exchange.

In September 2022, DM Mitsui Sugar Co., Ltd. acquired the nutrition food and related product business from Terumo Co., Ltd.

2022: September: Acquired nutrition food and related product businesses from Terumo Co., Ltd.

In October 2022, Mitsui Sugar Co., Ltd. was absorbed and merged into Dai Nippon Meiji Sugar Co., Ltd.

Mitsui Sugar Co., Ltd. and Dai Nippon Meiji Sugar Co., Ltd. merged and changed the name to DM Mitsui Sugar Co., Ltd.

2022: October: Merged Mitsui Sugar Co., Ltd. and DAI-NIPPON MEIJI Sugar Co., Ltd., changing the company name to DM Mitsui Sugar Co., Ltd.

In May 2023, DM Mitsui Sugar Co., Ltd. moved its headquarters to 26-16, 5-chome, Shiba, Minato-ku, Tokyo.

Moved headquarters to the current address (26-16, 5-cho, Minato-ku, Tokyo).

2023: May: Moved headquarters to the current address (26-16, 5 Chome, Shiba, Minato-ku, Tokyo).

In July 2023, DM Mitsui Sugar Co., Ltd. made Muscle Deli Co., Ltd. (now YOUR MEAL Co., Ltd.) a consolidated subsidiary.

Consolidated Muscle Deli Co., Ltd. (now YOUR MEAL Co., Ltd.) as a subsidiary.

2023 : 7月 : Muscle Deli Co., Ltd. (now YOUR MEAL Co., Ltd.) was consolidated as a subsidiary.

In April 2025, DM Mitsui Sugar Co., Ltd. was absorbed and merged, and its name was changed to DM Mitsui Sugar Co., Ltd.

Absorbed and merged DM Mitsui Sugar Co., Ltd. and changed the name to DM Mitsui Sugar Co., Ltd.

Merged with DM Mitsui Sugar Holdings Co., Ltd. and dissolved.

Merged with DM Mitsui Sugar Holdings Co., Ltd. and changed the name to DM Mitsui Sugar Co., Ltd.

2025 : 4月 : DM Mitsui Seito Co., Ltd. was absorbed and merged, and the company name was changed to DM Mitsui Seito Co., Ltd.

2025 : 4月 : Merged with DM Mitsui Seito Holdings Co., Ltd. and was dissolved.