Kumho Petrochemical aims to exit the debt workout programme it has undertaken for the past year by the end of 2011, and to help boost its economic viability the Kumho Asiana division intends to sell the million or so shares it holds in Kumho Tires. "As part of a consistent move, we will sell all stakes of Kumho Tire owned by us from July, to help strengthen financial soundness," said Kumho Petrochemical chairman Park Chan-koo.