M71: Architectural and engineering activities; technical testing and analysis
M711: Architectural and engineering activities and related technical consultancy
M7110: Architectural and engineering activities and related technical consultancy
M: Professional, scientific and technical activities
C25: Manufacture of fabricated metal products, except machinery and equipment
C251: Manufacture of structural metal products, tanks, reservoirs and steam generator
C2512: Manufacture of tanks, reservoirs and containers of metal
C: Manufacturing