I am looking for natural graphite for graphene production.
The Timcal Graphite & Technologies Company (Switzerland) offers as many graphites as you want.
Kust take a look there :
http://www.timcal.com/scopi/group/timcal/timcal.nsf/pagesref/SCMM-7EVDQL?Opendocument&lang=en
They can also supply samples for free (at least for me), as far as you explain what you want to do.
Alain
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