Her Royal Highness Princess Maha Chakri Sirindhorn graciously presided over the opening ceremony of Princess Maha Chakri Sirindhon Congress the international congress under the theme of “Interdisciplinary Approach to Sustainable Research and Development” to celebrate H.R.H. Princess Maha Chakri Sirindhorn’s 5th Cycle Birthday Anniversary on the 2nd of April 2015 and honor Her lifelong achievements, the congress being held during June 3-4, 2015. In this occasion, HRH Princess Sirindhorn was welcomed and presented hand garland by Miss Jintana Phongpakdee, Corporate Communications Director, of IMPACT Exhibition Management Co., Ltd. on June 3, 2015 at Shapphire Room 107 IMPACT Forum, Muang Thong Thani.