Right Tunnelling Public Company Limited (RT), Water Conveyance Tunnel Construction Project along Maha Sawat Canal, Shaft No. 9A-1 and 9A-2, provided support to Phraek Sa Subdistrict Municipality through a project to level the ground and pour concrete flooring for the playground at Baan Ua-arthorn Phraek Sa 14, Mueang District, Samut Prakan Province.