Home » Tender for Tender For The Purchase Of Ready-mixed Concrete With A Compressive Strength Of 28 Days (kg/cm²) In A Cubic Shape Of 15 X 15 Cm With A Compressive Strength Of 240 Kg/cm² Or In A Cylindrical Shape Of 15 X 30 Cm With A Compressive Strength Of 210 Kg/cm², Qua, Thailand