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Safety first! ???? Safety second! ???????? For the most important ????safety???? at construction sites, 5 actions and 5 prohibitions? TBM?? Right to stop work??? Natural person Seungyoon Lee goes in person~! Will Seungyoon Lee be able to safely complete the experience and become the safety champion?! (⊙_⊙)? #SamsungC&T #ConstructionSector #SamsungC&TConstructionSector #Safety #Champion #SafetyChampion #SeungyoonLee #IamANaturalPerson #NaturalPerson #5Acts5Forbidden #Raemian #Bucheon #UrbanVista #raemian