AFTER years at the helm of the country's most high-profile industry association, Tarun Das is all set to bid adieu.Das, who has been in the Confederation of Indian Industry (CII) for over 24 years, and its DG since 1992, is slated to retire on June 1, 1999. The announcement of his retirement and the choice of a new DG at CII is expected to be made the forthcoming Annual Session at New Delhi in April.