Mr. Pattanaphong Phongsupatsamit, Deputy Governor (Administration) on behalf of Mass Rapid Transit Authority of Thailand (MRTA) participated in signing the book of blessing to Queen Suthida Bajrasudhabimalalakshana in occasion of HRH birthday anniversary on Saturday 3^rd June 2023 at Sahathai Samakom Pavillion, the Grand Palace where Mr. Chayatham Promsorn, Permament Secretary of Ministry of Transport (MOT) led MOT’s executives and head of organizations under to participate in the sign.