It is one of the best advanced wet strength agent comparing to urea formaldehyde resin and melamine resin, the advantage as follows: 1. high efficiency 2. extent pH value 3. non-toxic, non-dangerous and easy to use 4. recycle waste paper and destroyed paper easily 5. enhace the sizing effect of akd sizing for paper 6. act as enhanceing agent for gum rosin sizing agent. 7. enhance the streng