S H BERGTEKNIK

W. GIERTSEN AS

MARTI IAV SOLBAKK DA

AURSTAD AS

PNC NORGE AS

SICHUAN ROAD & BRIDGE (GROUP) CORPORATION LTD.

JOINT VENTURE SRBG-VNG ANS

PORR BAU GMBH

STRABAG AG

RENESCO AG

OBRAS SUBTERRANEAS

KJERRINGSUNDET AS

MALMPOL SPOLKA Z.O.O.

SENKETUNNEL AS

GHELLA S.P.A NUF

ACCIONA CONSTRUCCION S.A.

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