Mr. Chanin is the Vice Chairman and Chairman of Executive Committee of Dusit Thani Public Company Limited. He has been the President of Thai Hotels Association (THA) from 1998 to 2002 and from 2004 to present. He has been a Vice-Chairman of Philippines Hoteliers from 1995 and the Vice Chairman of Dusit Thani College Council from 1996. Mr. Chanin has been appointed to be a member of the Thailand National Legislative Assembly (NLA) and is a director of World-class Rent A Car Company Limited. He was a director of various companies in Thailand, including The Siam Pulp and Paper Public Company Limited, MBK Properties and Development Public Company Limited, Patum Rice Mill and Granary Public Company Limited.

Mr. Chanin was the Executive Director of Dusit Thani Public Company Limited from 1983 to 2006, a member of the advisory board for Glion Hotel School, Switzerland from 1998 to 2003, the Chairman of the Board of Management of Kempenski AG from 1994 to 1998 and the President of Asean Hotels and Restaurants Association (AHRA) from 1999 to 2000, and from 2005 to present.

Mr. Chanin received his MBA degree from Boston University.

Mr. Chanin resides in Bangkok, Thailand.