Samsung has formally (and publicly) apologized over the hydrofluoric acid leak that occurred in January. Alongside this, Vice Chairman Kwon Oh-hyun said that the company will revoke its application to get its plants certified as green for another five years. He added that the company is now overhauling its existing system to prevent any similar accidents from recurring. Samsung's 'green' plants were previously able to sidestep governmental checks on the facilities' environmental impact. Meanwhile, police are still investigating seven people on charges of negligence over the incident.