| Oct. 1949 | Established Hiroshima Spinner Limited as the only spinning company in this region. | |
|---|---|---|
| Jun. 1957 | Established Hiroshima Synthetic Fiber Spinners Limited in partnership with Nichibo Co., Ltd.(current Unitika Ltd.). | |
| Jan. 1970 | Changed name of Hiroshima Spinners Limited to HIROBO LIMITED. | |
| Oct. 1972 | Started a plastics division. | |
| Apr. 1973 | Established HIROBO ELECTRIC CORPORATION. Started business in electronics equipment assembly. |
|
| Jul. 1973 | Successfully developed products for the radio-controlled model field and started business in radio-controlled models. | |
| Oct. 1977 | Withdrew from the manufacturing of spun yarns entirely and shutdown the spinning business. | |
| Jun. 1982 | Constructed a new office building and moved to the current Motoyama Industrial Complex in Fuchu City. | |
| Nov. 1988 | Started the production of an industrial-use helicopter"R-50". | |
| Apr. 1989 | Established Chugoku Skytec Inc.(former Hiroshima Skytec Inc.) | |
| Oct. 1999 | Introduced the company system. | |
| Jan. 2003 | Established  (Nanjing Hirobo Model) in Nanjing
City, China, as a Chinese-Japanese partnership. Purchased
and grouped Tamaya Model Shop (model wholesaler in Tokyo). |
|
| Mar. 2003 | Established the model shop of the Shanghai Show Room in Shanghai City, China. | |
| Apr. 2003 | Established the Tokyo Office. | |
| Oct. 2003 | Established the Research and Development Division. | |
| Dec. 2003 | Moved and Established the Plastic Vacuum Molding Plant. |
