| Sl No. | Firm Name | Class | Applied for | Final Cert No | Issue Dt | Valid From | Valid Upto |
|---|---|---|---|---|---|---|---|
| 1 | NMD ENGINEERING WORKS | Special Class | Renewal | WB/REPAIR-FINAL/2018/20 | 2018-08-06 | 2018-08-06 | 2020-08-04 |
| 2 | NMD ENGINEERING WORKS | Special Class | Not Available | 10 | 2014-07-21 | 2014-07-21 | 2016-07-20 |
| 3 | NMD ENGINEERING WORKS | Special Class | Not Available | 72 | 2016-07-18 | 2016-07-21 | 2018-07-20 |
| 4 | NMD ENGINEERING WORKS | Special Class | Renewal | WB/REPAIR-FINAL/2020/110 | 2020-07-27 | 2020-07-27 | 2022-07-26 |
| 5 | NMD ENGINEERING WORKS | Special Class | Renewal | WB/REPAIR-FINAL/2022/235 | 2022-07-22 | 2022-07-22 | 2024-07-21 |
| 6 | NMD ENGINEERING WORKS | Special Class | Renewal | WB/REPAIR-FINAL/2024/186 | 2024-07-15 | 2024-07-15 | 2026-07-14 |
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