How thin is the thinnest paper in the world?

Question: How thin is the thinnest paper in the world?
- Keywords:
  material,
  paper,
  thin
Asked by mrinsanet to Asif, Laura, Lena, Sean, Viv on 16 Mar 2012.
- Sean Murphy answered on 16 Mar 2012:
  
  The world thinnest Japanese mulberry paper. It is as thin as only 0.02mm and weight is 2g/m2

Question: How thin is the thinnest paper in the world?