■ History
| 1949 | Suehiro Kimono Fabric Shop established |
| 1957 | Suehiro Gravel established |
| 1963 | Quarry opened |
| 1967 | SUEHIEO SANGYO LLC.established; manufacturing of fresh concrete begins |
| 1971 | Civil Engineering Division factory for the manufacture of fresh concrete approved in Aichi Prefecture |
| 1973 | Quarry closed |
| 1975 | Registered as gravel pit operator, Aichi No.282 |
| 1976 | New fresh concrete plant constructed |
| 1977 | Obtained permission to display JIS certificarion at plant (477008 for fresh concrete) |
| 1981 | Secondary products plant newly constructed |
| 1986 | Kenji Agata appointed president |
| 1989 | Ougi-kai formed |
| 1992 | Name changed to SUEHIRO SANGYO CO.,LTD; new plant for fresh concrete constructed |
| 1993 | Hamamatsu Sales Office opened |
| 1996 | Hamamatsu Sales Office moved to new location |
| 2003 | Nagashino Sales Office opened |
| 2004 | Yakiniku House Rodan opened |
| 2006 | Secondary products plant closed |
| 2007 | Ohnojuku Museum Coffee House Horaikan opened |
| 2008 | Affiliation with Clean Up Co.,Ltd. Name changed from Yakiniku House Rodan to Yakiniku House Senju Undertook Kyoei Shokai Co.,Ltd.'s business lines Nagashino Sales Office moved to new location Affiliation with Shinshiro Fresh Concrete,Ltd. |
| 2009 | New plant completed;Business Headquarters moved to new location The real estate business established |
