Mitsubishi Heavy Industries Ltd. and Marubeni Corp. are among more than 10 companies joining a Japanese delegation to South Africa, Namibia and Angola to boost trade and secure resources, government officials said.

The group, led by State Secretary for Foreign Affairs Osamu Fujimura, will meet representatives of the three African countries during a one-week visit starting Aug. 28 to promote Japanese investment in resources, power and transportation projects, said the officials, who are involved in organizing the trip and who declined to be named before a public announcement.