Later, King Bhumibol appointed him Director-General of the Crown Property Bureau (CPB), that is responsible for administering the immense royal assets. Moreover, the king appointed him as Grand Chamberlain of the Bureau of the Royal Household. He is member of the boards of directors of several companies in which the CPB is a principal shareholder. Since 1987 he has been President of the Board of Directors of Deves Insurance. During and after the Asian financial crisis, he was the President of the Board of Directors of Siam Cement — which is one of the biggest corporations of Thailand — from 1998 to 1999, and of Siam Commercial Bank — the country's second largest bank — from 1998 to 2007. Since 2007 he has again led the Board of Directors of Siam Cement.