| 0810007 |
Gypsum Mining |
Petroleum and metal extraction |
Industrial |
| 0810008 |
Limestone Quarrying |
Petroleum and metal extraction |
Industrial |
| 0891004 |
Natural Manures Extraction |
Petroleum and metal extraction |
Industrial |
| 0899001 |
Marine Mining |
Petroleum and metal extraction |
Industrial |
| 0910001 |
Oil & Natural Gas Well Drilling |
Petroleum and metal extraction |
Industrial |
| 0910002 |
Oil & Natural Gas Well Maintenance |
Petroleum and metal extraction |
Industrial |
| 0910004 |
Oil & Natural Gas Well Reinforcement Services |
Petroleum and metal extraction |
Professional |
| 0910018 |
Onshore & Offshore Oil & Gas Fields Services |
Petroleum and metal extraction |
Professional |
| 0910019 |
Oil & Natural Gas Field Development |
Oil & Natural Gas Field Development |
Professional |
| 0910024 |
Emergency Response Center |
Separate professional activities |
Professional |
| 0910101 |
Repairing Oil & Natural Gas Well Equipment Abroad |
Petroleum and metal extraction |
Professional |
| 0910102 |
Well Drilling & Oil & Natural Gas Development Abroad |
Petroleum and metal extraction |
Industrial |
| 3312013 |
Oil & Natural Gas Well Equipment Repair & Maintenance |
Petroleum and metal extraction |
Professional |
| 3510001 |
Power Generation |
Power generation and transimission |
Industrial |
| 3510002 |
Electricity Transmission & Supply |
Power generation and transimission |
Industrial |
| 3510005 |
Power Generation Facilities & Distribution Systems Operation & Maintenance |
Power generation and transimission |
Professional |
| 3821002 |
Production of Waste-Derived Fuel |
Power generation and transimission |
Industrial |
| 4661006 |
Fuel Distribution |
Fuel Supply |
Commercial |
| 4661010 |
Fuel Supply Services |
Fuel Supply |
Professional |
| 4661104 |
Jet Fuel Supply Services |
Fuel Supply |
Professional |
