| 1943 |
Establishment of Oomiya Kogyo Co., Ltd. |
| 1985 |
Opening of the Technology Center |
| 1989 |
Establishment of Daeyang Chemical Co., Ltd. |
| 1992 |
Changed company name to O-Well Co., Ltd. |
| 1996 |
Establishment of O-Well Superbuild Co., Ltd. |
| 1998 |
Entered the Semiconductor Industry (HALL IC) |
| 1999 |
Ventured into the Color Matching Process of Coatings (O-Well Color Center Co., Ltd.) |
| 2001 |
Obtained ISO 14001 Environmental Management System Certification |
| 2006 |
Obtained ISO 9001 Quality Management System Certification |
| 2008 |
Establishment of O-Well Dalian Trading Co., Ltd. |
| 2009 |
Expansion into the Next-Generation Lighting (LED) Business |
| 2011 |
Establishment of O-WELL KOREA CORPORATION. |
| 2012 |
Establishment of PT. O WELL INDONESIA. |
| 2013 |
Establishment of O-WELL GERMANY GmbH. and O-WELL (Shanghai) Trading Co., Ltd. |
| 2014 |
Establishment of O-WELL (THAILAND) CO., LTD. and O-WELL VIETNAM CO., LTD. |
| 2016 |
Subsidiarization of San Marco Co., Ltd. |
| 2017 |
Establishment of O-WELL Mexico Coatings & Electronics S.A. de C.V. |
| 2018 |
Merger and absorption of San Marco Co., Ltd. by O-Rex Co., Ltd. (Renamed as San Marco Co., Ltd., Headquarters: Sagamihara City, Kanagawa Prefecture); Listed on the Tokyo Stock Exchange Second Section |
| 2020 |
Obtained the Aerospace Quality Management System Certification "AS/EN9120" |
| 2021 |
Establishment of O-Well (Shenzhen) Technology Trading Co., Ltd. |
| 2022 |
Transition to the Tokyo Stock Exchange Standard Market |
| 2024 |
Established O-WELL INDIA COATINGS & ELECTRONICS PRIVATE LIMITED |
