Integrated Graphene Ltd, the Scottish-based tech company, has fired the starting pistol on scaled production of its unique breakthrough 3D graphene foam, Gii, following the completion of a £3.1 million round of investment in the business, led by Edinburgh-based business angel syndicate, Archangels, with co-investment from Par Equity, Techstart Ventures and ESM Investments. Graphene is said to be 100 times …