Angola’s Cabinda oil refinery, among the first to be built in Africa in decades, has started shipping fuel, helping the crude producer bolster domestic supply and reduce reliance on imports.

The plant, built at a cost of more than $470 million, is supplying diesel to the domestic market, and shipping heavy fuel oil and petrochemical ingredient naphtha to international buyers, according to executives at Gemcorp Capital LLP, an investment firm that owns 90% of the refinery.