... paper surface to enhance surface strength, water resistance, paper stiffness, ring crush strength, smoothness and printing performance etc, of ... and ring crush strength 4. Technical parameters 1. External appearanceMilky to brown liquid2. Ionic propertiesCationic 3. Storage period ... in 5-30 °C dry, ventilated, shaded place; pay attention to frost and insolation;-- in accordance with the above storage ...