Tender For Purchase Of Ready-Mixed Concrete (Tis 213-2017) Compressive Strength Not Less Than 210 Kg/Sq.Cm. At 28 Days Old (Cylindrical Shape 15X30 Cm.) And 3 Other Items For Digging Flood Drainage Canals With Accompanying Buildings. Km. 20+100 - Km. 22+500, Sanam Chai Subdistrict, Bang Sai District, Phra Nakhon Si Ayutthaya Province, Primary Educational Service Area Office 10 By Electronic Bidding.

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