De qué está hecho papel
A material made of plant fibres; the oldest find is from Fangmatan (2nd century BC), and Cai Lun improved the technique (105).
- Máquina papelera — utiliza. Industrial production.
- Celulosa — está hecho de. Paper is cellulose fibres.
- Lejía — está hecho de. Bleach makes paper white: without it wood pulp would be yellowish grey.