| CE | Our Efforts |
| 1970's | Began energy saving activities. |
| 1980's | Suzuka Plant was recognized as the type 1 designated energy management factory (Chubu Regional ndustry ). |
| Osaka Office was awarded the Regional Bureaus of International Trade and Industry Chief's Prize. | |
| Suzuka Plant was commended by the Chief of the Chubu Regional Bureaus of International Trade and Industry ; Established the Energy Saving and Pollution Control Committee | |
| Started Environmental Control Office. | |
| 1992 | Suzuka Plant was awarded the Agency for Natural Resources and Energy Director-General 's Prize. |
| 1993 | Established the Company-wide CFC Control Committee. |
| 1994 | Completely eliminated use of trichloroethylene (Suzuka). |
| Completely eliminated specific CFCs and trichloroethylene. | |
| 1995 | Established Environmental Policy. |
| 1997 | Practical use of lead-free wires. |
| Suzuka Plant acquired ISO 14001 certification. | |
| 1998 | Developed halogen-free wires for automobiles. |
| 1999 | Built system for measuring quantities of waste. |
| Headquarters and Yokkaichi area acquired ISO 14001 certification. | |
| 2000 | Toyo Harness, Hokuriku Harness, Kyushu Sumidenso, Yuki, Sayama, Logistics Center, and Sumidenso Platech acquired ISO 14001 certification. |
| Yokkaichi Logistics Center, Ibaraki Plant and Misono Plant acquired ISO 14001 integrated certification. | |
| 2001 | Replaced all lighting equipment that uses PCB-containing stabilizers. |
| Released Environmental Report (First). | |
| Presentation at MIE Environmental Fair 2001. | |
| Chugoku Harness, Yamagata Sumidenso, and Tohoku Sumidenso acquired ISO 14001 integrated certification. | |
| 2002 | Support for Earth Project 21 (environmental NGO). |
| Developed and commercialized wiring harnesses that use halogen-free wirse. | |
| 2003 | Kyohritsu Hiparts acquired ISO 14001 certification. |
| Developed and commercialized easily removable wiring harnesses. | |
| Yamagata Sumidenso reccived "Environmental Preservation Promotion Award" from Yamagata Prefecture. | |
| 2004 | Established Green Procurement Guidelines. |
| Awarded "Kansai Recommended EcoOffice" | |
| Achieved "zero emission" at all sites. | |
| 2005 | Held an environment conference with overseas group companies. |
| Built an internal system for certifying environment-conscious products. | |
| Branches and sales bases acquired ISO 14001 integrated certification. | |
| 2006 | Formulated SWS Group environmental action plan "Challenge-Eco 2010". |
