These entities enjoy diverse contacts across the heavy industrial spectrum in both countries, replete with key directorships allocated to significant players in the 30-year-old regime of President Eduardo dos Santos and figures in China's military-industrial and intelligence establishment.

One high-profile veteran is Sonangol chief executive Manuel Vicente, listed as a director of CSIH, Sonangol Asia, WorldPro Development and the Global Investment Fund, and there are several others.

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