| Contact Information | |
| Addressee | General Manager |
| Address 1 | Engine Factory Avadi |
| Address 2 | CHENNAI |
| Address 3 | PIN - 600054 |
| State | Tamil Nadu |
| Pin | 600054 |
| Phone | Phone : 044-26385000 |
| Fax | Fax : 044-26840437 |
| Email : efa[dot]ofb[at]nic[dot]in | |
| Website | http://ofb.gov.in/units/EFA |
आखिरी अद्यतन : 09 October 2021
