Great lake Dredging & Dock Company , A US company specialized in the field of dreding & reclamation , including handling a full range of natural underwater materials silts, clays, sand and rock formations.
www.gldd.com
SAMBO E&C , a south Korean Company specialized in civil engineering works, such as slurry wall works. S.C W. works. H-PILE works, R.C.D. works, marine large diameter bored pilling, cell type temporary levee protector construction. S.G.R.L W grouting, NATM-method-applying works {subway, roads, utility pipe conduit, etc} , underground drilling works, and soil works.
www.sambotf.co.kr