| 1910 Oct. |
Maruni-Oguchi Fertilizers Limited Partnership opens Marukyu Omiya Branch. |
| 1938 Nov. |
Reorganized as Marukyu-Oguchi Oil & Fertilizers ltd with a capital value of 3,000,000 Yen. Manufactures fish/poultry feed and cooking oil. |
| 1967 May |
Total capital increased to 6,000,000 Yen. Marukyu expands into the fishing bait market. |
| 1973 May |
Marukyu moves into the international market, and begins exporting to south east Asian countries. |
| 1975 Jun. |
Total capital increased to 12,000,000 Yen. Construction of a 5 story reinforced concrete production plant and warehouse is finished. Plans are made to modernize production lines and annual turnover exceeds 1,000,000,000 Yen. |
| 1978 Jun. |
Annual turnover exceeds 1,200,000,000 Yen. Marukyu establishes itself as the top fishing bait producer in Japan. |
| 1979 Nov. |
Construction on 5 story (basement included) office headquarters in Omiya is completed. |
| 1980 Jun. |
Total Capital increased to 24,000,000 Yen. |
| 1981 Jul. |
Osaka Sales Office opened and begins operations. |
| 1981 Dec. |
Constructionon a 5 story reinforced concrete plant and warehouse in Omiya is completed. |
| 1982 Apr. |
Osaka Sales office moves to new offices in Neyagawa. |
| 1984 Dec. |
Change company name from Oguchi Oil & Fertilizer ltd to Marukyu Co., Ltd. |
| 1988 Jul. |
Total Capital increased to 48,000,000 Yen. |
| 1989 May |
Kyushu Sales Office opened and begins operations in Saga Prefecture, Tosu. |
| 1993 Apr. |
Total Capital increased to 96,000,000 Yen. |
| 1993 May |
Shikoku Sales Office opened and begins operations in Kagawa Prefecture, Sakaide. |
| 1994 Jan. |
Production moves to new plant in Okegawa (3 story plant). |
| 1995 Nov. |
Annual turnover exceeds 6,000,000,000 Yen. |
| 1997 Aug. |
Operations expanded at Okegawa Plant. Additional 5 story section is completed. |
| 2000 Jan. |
Marukyu Building near Saitama Shintoshin Station is opened for rent. (10 story building, with a basement and parking for 51 cars) |
| 2003 Sep. |
Distribution centre for Western Japan is set up in Okayama Prefecture. |
| 2003 Sep. |
Open production plant in Tianjin, China to produce baits for the domestic Chinese market. |