Torsten Van Dullemen Mandarin Oriental Hotel Group has announced the appointment of Torsten Van Dullemen as General Manager of Mandarin Oriental Dhara Dhevi, Chiang Mai effective January 2013. Mr Van Dullemen succeeds Andrew Abram, who has left the Group to pursue other opportunities. Mr Van Dullemen first joined the Group in 2004 as Resident Manager of Mandarin Oriental Hyde Park, London, and he joins this property from his most recent position as Hotel Manager at Mandarin Oriental, Bangkok, a post he held for two years.