Dear: Khun Phermpoon,
After Khun Natthawut check GPS of mileage from ESBEC to ECO well sit the destination mile only 780 km (round trip) but I gave you extra 788 km over than Khun Natthawut check to GPS system. Please inform to contractor change mileage and cost as below cost as declare by me.
Note: Khun Natthawut, please help me to check mileage from ECO well site in Wichainburi to SCCC cement in Saraburi and Wichainburi to SCC Lampang to ensure mileage confirm Khun Phermpoon is not mistake again and give mile over to contractor with pay cost over than in actual mileage.