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NIC 421004—Construction and maintenance of railway tracks/ Metro tracks

Subclass · National Industrial Classification (2025)

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Where 421004 sits

  1. F Construction
  2. 42 Civil engineering
  3. 421 Construction of roads and railways
  4. 4210 Construction of roads and railways
  5. 421004 Construction and maintenance of railway tracks/ Metro tracks

What 421004 includes

  • Construction and maintenance of railway tracks/ Metro tracks

421004 in other systems

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