... purity > 99%, completely single-layer, ply 0.7-1.2 nm, sizes are hundreds of nm - several µ ... Features: solid powder, Purity>99%, layer thickness 0.7-1.2nm, sizes are hundreds of nm - several µm ... the preparation of photoelectric devices. SGraphene—030Name: Single layer of Graphene solution, Features: Concentration is 1mg/ ... Features: over 85% of them are distributed in 4 to 8 layer, 2-4 nm thick , ...