The sustainable qualities of paper, is a key point of paper industry for yield production target. Fiber bond strength is presumable the most interesting aspect of dry strength resins. Our products especially designed to meet paper industries needs. It provides not only the required strength properties to paper but can also improve machine Runnability and process efficiency. Our Dry strength additive has been easy-to-use ,liquid form of dry strength additive can adsorb on fiber surfaces by its cationic and/or amphoteric polar imparts of hydrophilic group.