▁and ▁tag line . ▁However , ▁they ▁keep ▁their ▁own ▁identity , ▁oper ational ▁aut onomy , ▁and ▁legal ▁structure . ▁Some ▁of ▁the ▁operating ▁companies ▁of ▁DE ME ▁include : ▁ ▁D red ging ▁International ▁D red ging ▁International ▁is ▁one ▁of ▁the ▁major ▁operating ▁companies ▁of ▁DE ME ▁and ▁focus es ▁on ▁the ▁core ▁activities ▁of ▁the ▁group : ▁capital ▁and ▁maintenance ▁d red ging ; ▁deep ening ▁and ▁maintain ing ▁navigation ▁channels ; ▁major ▁port ▁development ; ▁re clam ation ▁of ▁new ▁industrial ▁or ▁resident ial ▁areas , ▁artificial ▁islands , ▁be aches ▁and ▁coast al ▁protection . ▁Its ▁roots ▁are ▁in ▁the ▁Ant werp ▁area ▁of ▁Belg ium ▁where ▁its ▁constitu ent ▁companies ▁began ▁capital ▁and ▁maintenance ▁d red ging ▁on ▁the ▁Sch elde ▁at ▁the ▁end ▁of ▁the ▁ 1 9 th ▁century . ▁D red ging ▁International ▁has ▁subs idi aries , ▁branches ▁and ▁representative ▁offices ▁in ▁Spain , ▁Portugal , ▁the ▁United ▁Kingdom , ▁Russia ▁and ▁East ▁Europe , ▁Mexico , ▁Uruguay , ▁India , ▁Niger ia , ▁Bah rain , ▁Pan ama , ▁Venezuela , ▁Singapore , ▁Australia , ▁China , ▁Taiwan , ▁Vietnam , ▁Brazil , ▁Gh ana , ▁Luxemb ourg , ▁Finland , ▁Dub ai , ▁Ab u ▁D hab i , ▁Ang ola , ▁Sa udi ▁Arab ia , ▁Lat via . ▁D red ging ▁International ▁is ▁an ▁associated ▁company ▁in ▁Middle ▁East ▁D red ging ▁Company ▁Q SC ▁( ME D CO ). ▁ ▁B agger wer ken ▁Dec lo ed