| Company Name | Designation | Appointed on | DSC | Status |
|---|---|---|---|---|
| JOHN OIL AND GAS LTD | Director | 01 Nov, 1994 | Yes | Resigned |
| JOHN ENGINEERING PRIVATE LIMITED | Director | - | Yes | Active |
| JOHN ENERGY LIMITED | Managing Director | - | Yes | Active |
| JOHN DRILLING SERVICES PRIVATE LIMITED | Director | - | Yes | Active |
| AHMEDABAD INSTITUTE OF DRILLING TECHNOLOGY | Director | - | - | Active |
| SYNERGY DRILLING FLUIDS PRIVATE LIMITED | Director | - | - | Active |
| MEGHMANI DYES AND INTERMEDIATES LIMITED | Director | - | - | Active |
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