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-Trialmix concrete samples (7 day strength) - CC1 suppliers and World House/Trialmix concrete samples compression (7 day strength) - CC1 and Gioi Nha suppliers
-Witness trialmix concrete samples (7-day strength)–supplier CC1 & House of the World/Compression of Trialmix concrete samples (7-day strength)–CC1&the Gioia supplier.