35 Electricity, gas, steam and air conditioning supply

• 351 Electricity generation and supply
  • 3511 Electricity generation
  • 3512 Electricity transmission
  • 3513 Electricity distribution
  • 3514 Electricity trading
• 352 Gas supply
  • 3521 Gas production
  • 3522 Gas distribution
  • 3523 Gas trading
• 353 Steam supply, air conditioning
  • 3530 Steam supply, air conditioning

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