good morning
hereunder pls find something. hope it will assist u
Angstron Materials

Angstron Materials (owned by Nanotek Instruments and based in Ohio, USA) is developing and producing nano graphene platelets (NGPs), and also provide pristine graphite and single layer graphene.
In June 2011 the company announced a spin-off called Angstron Supercapacitor that will produce a new supercapacitor electrode material made from Graphene.

enjoy yr day
Rr