| 1886-11 |
Founded December 1886 |
| 1937-06 |
June 1937: Aiming to manage rubber business through integrated operations from rubber cultivation in the South to product manufacturing, established Showa Gomo Co., Ltd. as the parent company. |
| 1937-06-01 |
Established: June 1, 1937 (Founded December 1886). |
| 1937-06 |
Intended to manage rubber business from cultivation in the south to product manufacturing, first established Showa Gomo Co., Ltd. as the parent company. |
| 1937-06-01 |
Established: June 1, 1937 |
| 1937-09 |
September 1937: Absorbed and merged with South Asia Co., Ltd., Sumatra Kogyo Co., Ltd., Tokyo Gomo Kogyo Co., Ltd., and Meiji Gomo Kogyo Co., Ltd., which managed rubber cultivation in Sumatra and Malaya and rubber product manufacturing and sales in the mainland. |
| 1937-09 |
Absorbed and merged with Nankoku Company Ltd., Sumatra Kogyo Co., Ltd., Tokyo Gomo Industrial Co., Ltd., and Meiji Gomo Industrial Co., Ltd., which managed rubber cultivation in Sumatra and the Malay Peninsula and rubber product manufacturing and sales in the mainland. |
| 1945-05 |
May 1945: Absorbed Mita Do Rubber Manufacturing Co., Ltd., founded in 1926, Japan's oldest rubber company. |
| 1945-05 |
Absorbed and merged with Mita Do Rubber Manufacturing Co., Ltd. (founded in 1906, Japan's oldest rubber company). |
| 1945-12 |
December 1945: Started operations as the Sagami plant, manufacturing rubber products and other operations, utilizing the former Sagami Naval Arsenal facilities. |
| 1945-12 |
Utilized the former Sagami Naval Factory facilities to start rubber product manufacturing and other operations at the Sagami plant. |
| 1949-06 |
June 1949: Separated the Sagami plant as Nitto Tire Co., Ltd. |
| 1949-06 |
Separated the Sagami plant as Nitto Tire Co., Ltd. |
| 1952-12 |
December 1952: Registered for listing on the Second Section of the Tokyo Stock Exchange. |
| 1952-12 |
Registered for listing on the Second Section of the Tokyo Stock Exchange. |
| 1966-04 |
April 1966: Closed the Chijubu plant and started operations at the Kashiwa plant. |
| 1966-04 |
Closed the Chijimi plant and established and started operations at the Kashiwa plant. |
| 1968-12 |
December 1968: Changed the company name to Showa Rubber Co., Ltd. |
| 1968-12 |
Changed the company name to Showa Rubber Co., Ltd. |
| 1982-04 |
April 1982: Closed the Oko factory and established new food, medical, and sports goods factories within the Kashiwa plant, commencing operations. |
| 1982-04 |
Closed the Ohi factory and established and started operations of food, medical, and sports goods factories within the Kashiwa plant. |
| 1990-03 |
March 1990: Established Showa Corporation Co., Ltd. |
| 1990-03 |
Established Showa Corporation Inc. |
| 1994-06 |
June 1994: Moved headquarters from Kyobashi, Chuo-ku, Tokyo to Kashiwa City, Chiba Prefecture. |
| 1994-06 |
Moved headquarters from Kyobashi, Chuo-ku, Tokyo to Kashiwa City, Chiba Prefecture. |
| 2008-06 |
June 2008: Conducted a third-party allotment of capital to Asuka Holdings Co., Ltd., part of the APF (Asia Partnership Fund) group. |
| 2008-06 |
Implemented a third-party allotment of capital to Asuka Holdings Co., Ltd. of the APF (Asia Partnership Fund) group. |
| 2009-06 |
June 2009: Changed company name from Showa Rubber Co., Ltd. to Showa Holdings Co., Ltd. |
| 2009-06 |
Changed the company name from Showa Rubber Co., Ltd. to Showa Holdings Co., Ltd. |
| 2009-10 |
October 2009: Split off a new business company. |
| 2009-10 |
Established a new operating company through a split. |
| 2009-11 |
November 2009: Made Toyo Rubber (Malaysia) Sdn. Bhd. a subsidiary and renamed it Showa Rubber (Malaysia) Sdn. Bhd. |
| 2009-11 |
Made Toyo Rubber (Malaysia) Sdn. Bhd. a subsidiary and renamed it Showa Rubber (Malaysia) Sdn. Bhd. |
| 2011-05 |
May 2011: Made Wedge Holdings Co., Ltd. a subsidiary. |
| 2011-05 |
Made Wedge Holdings Inc. a subsidiary. |
| 2011-07 |
July 2011: Applied the equity method to Asuka Food Group. |
| 2011-07 |
Applied the equity method to Asuka Foods Group. |
| 2018-10 |
October 2018: Became a subsidiary of Asuka Foods Group. |
| 2018-10 |
Made Asuka Foods Group a subsidiary. |
