Right Tunnelling Public Company Limited (RT) – Tunnel Construction Division As part of the Mae Kuang Udomthara Dam Water Volume Enhancement Project (Contract No. 1, Mae Taeng-Mae Ngad Section Water Delivery Tunnel and Associated Structures), the company donated funds to support the improvement of the water supply system in Thung Yua and Pha Pu Chom Villages, Mae Taeng District, Chiang Mai Province. The Royal Irrigation Department is supervising the installation.

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