China Electronics Technology Group Corporation (CETC), a state-owned enterprise, has developed a process that enables the mass production of graphite with a carbon content exceeding 99.99995%.

"It's bigger than a brain drain," Mr Ichikowitz told the BBC Newsday programme. "This group of people, 18 to 24 year olds in Africa, are saying: 'We are going to improve our lives, even if it ...