Dry Powder Paper Retention Agent is a new type of high efficiency papermaking auxiliary agent that integrates retention and filtration aid. It belongs to amphoteric organic macromolecule polymers; it can significantly improve the retention of fillers and fine fibers while improving the wet chemistry add additives: such as storch sizing agent, etc. save the amount of slurry and additives, reduce the input cost of raw materials, sizing and enhancing role reduce the concentration of white water under the net, reduce the pollutants discharged from the workshop; in particular, it has a significant effect on the improvement of ash content such as cultural paper and Newsprint