Magnesium lignosulphonate is a kind of natural anionic surfactant of high molecular polymer Main performance: Remain the same concrete mix to improve workability of concrete mixture. To maintain the same amount of cement and workability, increase strength and durability of concrete; To maintain concrete workability and strength of the same 28 days, lower water-cement ratio, cement saving. Packed in plastic film bag wrapped with plastic woven sack with a net weight of 25kg each.