My pick is FGR - First Graphene formally First Graphite,
FGR is slightly different to all of the other Graphite companies, there focus is Graphene not graphite, (although they do have there own graphite mines in Sri Lanka and a supply agreement with the Sri Lanka Government mine for 1,000tpa - 2 year period)
FGR have two methods of making Graphene,
There own production method that uses Sri Lankan Vein Graphite, FGR are currently building a production facilities in WA that will have an annual production of 90-100tpa, this doesn't sound like much, if you consider graphene sells for $100k + USD per tonne and the facilities are costing under $1mil to build they can replicate these facilities in any city / Country,
The other production method VFD uses flake graphite, which will allow FGR to source graphite from any company to convert to graphene.
First Graphite isn't one to name drop, recently in the companies chairman's address had this comment.
"To date there has been a chicken and egg debate. Which should come first, the production facility or the sales book? We all know of the enormous potential for graphene, but one of the biggest obstacles to commercialisation has been the availability of supply. Companies like Tesla would love to embrace graphene more fully, but as they said to us a year ago, “we can’t get enough supply to warrant us turning our minds to it”. Well, that was before we built this facility. Industry will now be able to commit resources to developing commercial applications, taking the science from the laboratories onto the factory floor. It is all about scaling up from here."
Fisker - The Russian sports car builder is soon to unveil his new sports car that uses a Graphene Solid state battery in Las Vegas next week. the future lithium ion batteries will all use Graphene not spherical Graphite.
http://www.hybridcars.com/fisker-emotion-debuting-ces-solid-state-battery-fast-charge-time/
Here is an example of FGR graphene used as a fire retardant (Firestop), the first video coat is 40um (1/4 the thickness of a human hair)
the second video coat is around 400 um, the butane flame is approx 3000c,
FireStop is soon to tested by the CSIRO for approval during Q1 2018
FGR graphene used as a flame retardant in a plastic pallet test.
The use of graphene is almost unlimited, it can be used to improve batteries, purify water, improve plastics, concrete, tyres, fire retardent, anti corrosive coatings, ect.
http://nationalgrapheneassociation.com/graphene-world-news/