Threestar Seika Co., Ltd.

Threestar Seika Co., Ltd. (スリースター製菓株式会社) is a Japanese confectionery manufacturer headquartered in Kodaira, Tokyo, with its main factory in Takasaki, Gunma Prefecture. Founded in August 1974 in Ota, Tokyo, the company began confectionery production and completed its Takasaki factory in December of the same year. It is part of the Daiichi-ya Baking Group, whose corporate motto is 'With sincerity in deliciousness' (おいしさにまごころこめて). The company's core business is the manufacture and sale of cookies, confectioneries, and other food products, with a strong emphasis on OEM (original equipment manufacturing) for other companies. Its signature product is a long-selling raisin sandwich, and it also produces a wide variety of cookies and biscuits. Threestar Seika leverages proprietary sandwiching technology and high-mix, low-volume production capabilities to meet diverse customer requests. It also develops its own original products, such as seasonal items like chocolate sandwiches and melon cream sandwiches. As of December 2024, the company reported capital of 99 million yen, annual sales of 1.96 billion yen, and 164 employees. It holds ISO 9001 (since January 2015) and FSSC 22000 (since December 2017) certifications at its Takasaki factory, underscoring its commitment to food safety and quality management. The current representative director and president is Goro Kojima, who took office following a leadership change announced in February 2025. The company celebrated its 50th anniversary on August 9, 2024.

Threestar Seika Co., Ltd. was founded in August 1974 in Higashirokugo, Ota Ward, Tokyo, under the trade name 'Threestar Seika Co., Ltd.' to engage in the confectionery business. In December 1974, the company completed its Takasaki Factory in Takasaki, Gunma Prefecture, and began operations there. The factory is located within the Daiichi-ya Baking Takasaki Factory premises, indicating an early connection to the Daiichi-ya Baking Group. In November 2000, the head office was relocated to Minamikamata, Ota Ward, Tokyo. In June 2009, the head office moved again to its current location in Ogawahigashicho, Kodaira, Tokyo. The company continued to invest in quality management: in January 2015, the Takasaki Factory obtained ISO 9001 certification, and in December 2017, it obtained FSSC 22000 certification (registration number JQA-FC0124) for the design, development, and manufacture of baked confectioneries (biscuits and snacks). On August 9, 2024, Threestar Seika celebrated its 50th anniversary since founding. As of December 2024, the company had capital of 99 million yen, annual sales of 1.96 billion yen, and 164 employees. In February 2025, the company announced a change of its representative director and president; Goro Kojima is the current president. The company remains part of the Daiichi-ya Baking Group and continues to focus on OEM production and original product development.

• Founded in Ota Ward, Tokyo, as Threestar Seika Co., Ltd.

• Completed Takasaki Factory in Takasaki, Gunma Prefecture, and started operations.

• Head office relocated to Minamikamata, Ota Ward, Tokyo.

• Head office relocated to Ogawahigashicho, Kodaira, Tokyo.

• Takasaki Factory obtained ISO 9001 certification.

• Takasaki Factory obtained FSSC 22000 certification.

• Celebrated 50th anniversary since founding.

• Announced change of representative director and president.

OEM-focused confectionery manufacturer with proprietary sandwiching technology and high-mix, low-volume production.

• Raisin sandwich

  A long-selling signature product.

• Chocolate sandwich (winter limited)

  A seasonal product sold in winter.

• Melon cream sandwich

  A product featuring melon cream.

1. 1スリースター製菓株式会社 – ―おいしさに、まごころこめて―3starseika.co.jp
2. 2スリースター製菓について – スリースター製菓株式会社3starseika.co.jp
3. 3アクセス – スリースター製菓株式会社3starseika.co.jp
4. 4新商品の探求 – スリースター製菓株式会社3starseika.co.jp
5. 5Threestar Seikawikidata.org