@adazhang9874: HPMC delivers excellent water retention, improves workability and open time. RDP enhances adhesion, flexibility and anti-sag property for C2 / C3 tile adhesive. Stable batch quality, fast delivery. Test samples are ready for your formulation trial. DM us for TDS and price. #TileAdhesive #HPMCpowder #RDPpowder #ConstructionAdditives #BuildingChemicals