The SP series shows excellent performance as follows:
1.Environment-friendly;
2.Suitable viscosity,disperse easily.excellent stability;
3.High pigment content,small particle size and narrow distribution of pigment,high color strength,suitable for tinting of the high whiteness paper;
4.Excellent affinity to fiber,excellent absirption property to different paper fiber and starch gum;
5.Excellent chemcial stability and migration resistance.