Introduction This surface sizing agent for kraft & corrugated paper has the advantages of less dosage, lower cost and easier operation. It can significantly improve the water-resistance and ring crush strength Of board paper, corrugated paper and fine paper. Specification Appearance: white to light brown liquid Ph value: 3-5 Solid content: 30%(±2%) Water solubility: easy Viscosity: max. 30 cp. S(25) Ionicity: cationic Shelf life: 6 months Package and storage Packed in 200kg or 1000kg plastic drum. The product should be stored under the condition of 4-25, and the proper temperature should be below 30. Notice Application temperature should be below 75.