For abroad sites where gewatech has no immediate access to equipment and personal resources, the company's know-how is offered through specialized site management. This know-how can be provided either by on-site management or by professional advice from the company's headquarters in Germany. Underwater concrete slabs at the construction site at the Rio Sub Terraneo, Buenos Aires, Argentina. Pumphouse Castle Peak B Powerstation, Hongkong: Reinforced concrete at a water depth of 19 m.