Vietnam’s central region is expected to take a decade to completely recover from an industrial accident caused by a unit of a Taiwan conglomerate, which led to Vietnam’s worst ever environmental disaster, the government said. Formosa Ha Tinh Steel, a unit of Taiwan’s Formosa Plastics that runs an $11 billion steel plant, sullied more than 200 km of coastline in April, killing more than 100 tonnes of fish and devastating the environment, jobs and economies of four provinces.