| Particulars | GRSE Kolkata | DEP Ranchi | Bailey Bridge Angul |
| GST Registration No | 19AAACG9371K1Z4 | 20AAACG9371K1ZL | 21AAACG9371K1ZJ |
| Concerned Person | Tapan Ray Chaudhuri | Sujeet Dutta | Tapas Chakraborty |
| Concerned Person Contact No | 033-24698100 | 033-24698100 | 033-24698100 |
| Concerned Person E-mail ID | Raychaudhuri[dot]Tapan[at]grse[dot]co[dot]in | Dutta[dot]Sujeet[at]grse[dot]co[dot]in | Chakrabarty[dot]Tapas[at]grse[dot]co[dot]in |
