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Roads, sewage, train, metro, etc…. TNL18 has been working in all kind of Projects around the world.
References

Completed projects around the world

Spain
Metro Barcelona L9
Metro Barcelona L9
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Ecuador
Metro Quito
Metro Quito
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UK
Thames Tideway Central
The Thames Tideway Central Tunnel is the longer part of the Thames Tideway Tunnel Project that consist of the sewage water collection of London from Acton to Abbey Mills pumping Station.
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