Graphene Composites Limited (GC) is a nano-materials technology company. We combine graphene (the strongest known material in the world), aerogels (the lightest, most shock-absorbent materials ever developed) and other materials to produce a range of composites that are amongst the strongest, lightest, most resilient material ever created.Graphene Composites Limited (GC) is a nano-materials technology company. We combine graphene (the strongest known material in the world), aerogels (the lightest, most shock-absorbent materials ever developed) and other materials to produce a range of composites that are amongst the strongest, lightest, most resilient materials ever created.