From historical view, it showed the adjunctive action of AD was only be recognized with emphasis on its action as corrigent and effect on complications.
In addition, the paper for beating degree, firmness and filling, sizing, and so on, with the crimpness, self-crimping to marketizing of paper also focuses on the papermakig process.
What is its emphasis point The stress in the duty, inside the duty the most important is the economic development, then holoscopic past 10 year Deng Lun the big topic, 90% tests the economic problem.