Mr. Chawalit Thanomthin (second from left), Chief Executive Officer, and Mr. Chaiya Wonglapphanit (left), Managing Director of Right Tunneling Public Company Limited (RT), signed a contract for the construction of the water tunnel and associated buildings, along with other components for the Mae Tang-Mae Ngat water tunnel. This is the second contract for the project aimed at increasing the water volume in the Mae Kuang Udom Thara Dam in Chiang Mai, valued at 2.8 billion baht, with a contract duration of 1,800 days with the Royal Irrigation Department (the client). Mr. Thanand Sutthipisan (second from right), Deputy Director-General of the Royal Irrigation Department (Construction Division), signed on behalf of the client, while Mr. Pongsak Akkaramanee, Director of the Procurement Division, and Mr. Woraphat Ketunuti, Director of the Monitoring and Evaluation Division (M&E), served as witnesses for the contract signing on January 6, 2026, at the Royal Irrigation Department in Samsen.