cottons and grasses
3. During the whole manufacturing process, the final product is made from
strong alkalies
caustic soda
cellulose fibres
a pulp of cellulose fibres
4. In order to make white paper and card, the makers will add __
albescent
bleach
escharotic
lysozyme
5. is essential for the tree but it will make paper easy to break.
Acid
Alkali
Cellulose fibres
Liguin
6. Many paper producers will preserve lignin during manufacture, because __
leaving the lignin will decrease his paper yield
leaving the lignin will make more paper from a tree
liguin is very useful in the process
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