On 23 November,Mr.Simon Landy, Executive Chairman of Colliers International Thailand, Dr.Bandid Nijathaworn, President & CEO, Thai Institute of Directors and Colliers senior staff at the signing ceremony of Colliers joining "Thailand’s Private Sector Collective Action Coalition Against Corruption at Novotel Fenix Ploenchit. Colliers is the first property consultancy in Thailand to join the Coalition.