NEG

GAS OIL; FUEL GAS; SOLIDIFIED GASES (FUEL); PETROLEUM, RAW OR REFINED

ENERGY AUDITING; ANALYSIS FOR OIL-FIELD EXPLOITATION; CONSULTANCY IN THE FIELD OF ENERGY-SAVING; OIL-WELL TESTING; RESEARCH ON ENVIRONMENTAL PROTECTION; OIL PROSPECTING; CONDUCTING TECHNICAL PROJECT STUDIES; MANAGEMENT (SERVICES OF) OF THE ENERGY USE; SCIENTIFIC ANALYSIS OF PROJECTS FOR THE PROTECTION OF THE ENVIRONMENT; QUALITY CONTROL (SERVICES OF) TO OBTAIN A CERTIFICATION; TECHNICAL VERIFICATION SERVICES TO OBTAIN A CERTIFICATION; CONTAMINATION LEVEL VERIFICATION IN ENGINES; EXPLORATION SERVICES IN THE FIELD OF THE OIL, GAS AND MINING INDUSTRIES; TECHNICAL EXAMINATIONS OF QUALITY STANDARDS TO OBTAIN A CERTIFICATION