SEOUL, Oct. 13 (UPI) -- South Korean chemical giant OCI Holdings said Monday it will enter the solar wafer business to target the U.S. market by acquiring a facility being built in Vietnam. Toward that end, its subsidiary, OCI TerraSus, plans to spend $78 million to purchase a 65% stake in a 2.7-gigawatt wafer plant from Elite Solar Power Wafer, which is scheduled for completion by the end of this month. OCI Holdings expects the factory to start rolling out wafers early next year, without