I understand now!!Concentrate purity should be over 94% graphitic carbon (“Cg”). A premium is paid if it is higher and prices are discounted if it is less. NOU, NGC and FMS have all demonstrated the ability to produce concentrates in the order of 96-98% Cg. According to Mason’s FS, 56.6% of its concentrates will be very small flake/fines at 91.9%Cg.