| 1919年10月 |
Maruzen Ironworks founded. |
| 1937年11月 |
Name changed to Maruzen Ironworks Co., Ltd. |
| 1961年10月 |
Head office premises completed. |
| 1963年12月 |
Ichikawa Plant completed. |
| 1967年09月 |
Name changed to Maruzen Co., Ltd. |
| 1970年12月 |
Maruzen Keiyo Oil Terminal Completed. |
| 1971年06月 |
Warehouse A completed. |
| 1971年09月 |
Warehouse B completed. |
| 1971年09月 |
Capital of Maruzen Co., Ltd., increased to 100 million yen. |
| 1972年04月 |
Fujii, Inc., established. |
| 1985年10月 |
Conversion of tanks and lines at Keio Oil Terminal for conformity to all-stainless steel specifications completed. |
| 1989年05月 |
Keiyo Logistics Co., Ltd., established. |
| 1989-05-18 |
創業 |
| 1990年10月 |
Maruzen Irios Co., Ltd., established. |
| 1996年10月 |
ISO 9002 international standard certification for quality-assurance systems obtained for Maruzen Co., Ltd., (registration certificate no. NQA-9506025A). |
| 2003年11月 |
ISO 9001 certification for quality-assurance management systems obtained for Maruzen Co., Ltd., (registration certificate no. NQA-0206025A). |
| 2004年03月 |
General handling sites to accommodate ISO tank containers designed to enable special work on hazardous materials to be performed (including work that involves transferring hazardous materials out of drums, filling containers, dividing materials into smaller portions, and heating) opened. |
| 2004年04月 |
An automated multi-tier warehouse for hazardous materials completed. |
| 2004年11月 |
ISO 9001 certification for quality-assurance management systems obtained for Keio Logistics Co., Ltd., (registration certificate no. NQA-0206025A). |
| 2011年02月 |
CDI-T (international examination standards) testing conducted on our tank terminal business. |
| 2011年05月 |
Capital of Keio Logistics Co., Ltd., increased to 100 million yen. |
| 2016年01月 |
Kashiwa Complex opened. |
| 2017年10月 |
Quality management system has been transferred to ISO9001：2015. |
