NAMLIK1 HYDRO POWER- PRE- COFFERDAM : Drilling rock&stone by PRD to install steel sheetpile and Made wall by Grouting admin2019-09-26T09:24:29+00:00 0 Saturday August 17th, 2019 Underground Treatment Project description Location: Vietiane, Laos Investor: Posco E&C Co.,Ltd Share Facebook Twitter LinkedIn Email