精制牛皮纸

精制牛皮纸精制牛皮纸
  1. 如果要生产合格的牛皮信封纸和精制牛皮纸,需要配以33%的针叶木硫酸盐浆。

    For the production of qualified kraft envelope paper and fine kraft paper , 33 % needle wood KP is needed to add .