They have built a line in Ethiopia, about 800 km completed so far, opened 20th November, with up to another 5,000km linking several East African countries planned.
Also, across the continent, in April, China Railway Construction Corp signed a $3.5bn (£2.3bn) contract to build an intercity rail line in Nigeria.
That followed a $12bn contract for another Nigerian rail line last year, which at the time was the biggest foreign contract won by a Chinese state-owned firm. The line is planned to run 1,400km along the Nigerian coast.
China is also building major rail projects in Angola (under an infrastructure-for-oil deal), DR Congo, Kenya and Tanzania.
Chinese infrastructure investments overseas are commonly underpinned by finance from Beijing-backed lenders such as China Development Bank. The rail projects are expected to generate billions of dollars in export orders for Chinese trainmakers.
They like infrastructure for resources deals, so chromite (offtake agreement?) for a railway is right in line with their standard practices.
http://www.bbc.com/news/world-africa-34871074