Michielsens is active in the following industries:
- Construction
- Utility (commercial and public)
- Structural, water, prefab & finishing
- Appliances, tanks, machines
- Steel construction- Bridges (concrete and steel)
- Concrete (prefab)
- House - Chemical and Petrochemical (Plant stops)
- Electro-mechanics
- Pharmaceutical
- Ground works and road works
- Harbours and shipping companies)
- Industrial cleaning and maintenance
- Utility companies (water, gas, electricity)
- Storage and transport
- Railways
- Study agencies
- Technical Maintenance
- Telecommunication
- Food
- Windmill
