It is also interesting to see how other international companies purchase stakes in organisations over time. I.e:
http://www.denel.co.za/our-business/associated-companies
Associated Companies

Hensoldt Optronics

Denel holds a 30% stake in Hensoldt Optronics, formerly known as Carl Zeiss Optronics. The South African subsidiary is a specialist entity in the design, development, manufacture and after sales support of electro-optical products for airborne, laser and helmet head tracker systems for the commercial and military markets.

For more information, please visit: https://www.hensoldt.net

Rheinmetall Denel Munition

Rheinmetall Denel Munition (RDM) was created on 1 September 2008 when Rheinmetall Waffe Munition GmbH of Germany acquired a 51% share in certain of Denel's munitions manufacturing facilities. All propellants, heavy caliber ammunition and pyrotechnics are now manufactured by RDM).

For more information, please visit: http://www.rheinmetall-defence.com/en/rheinmetall_defence/company/divisions_and_subsidiaries/rheinmetall_denel_munition/index.php

https://www.rheinmetall-defence.com/en/rheinmetall_defence/company/divisions_and_subsidiaries/rheinmetall_denel_munition/index.php

History

Rheinmetall Denel Munition (Pty) Ltd was established on September 1, 2008 when the Denel divisions comprising of Somchem (Somerset West and Wellington sites), Swartklip, Boksburg and Naschem became part of the Rheinmetall Defence Group. The company became known as Rheinmetall Denel Munition (RDM) with Rheinmetall Defence being the majority shareholder, while Denel holds 49% of the shares.

Somchem was bought by the Armaments Corporation of South Africa (Armscor) in 1971 from AECI (African Explosives and Chemical Industries). During 1992 Armscor was split into two entities; the Armscor Procurement Agency of the Department of Defence and Denel (Pty) Ltd, which incorporated the defence manufacturing companies within South Africa. Somchem operated from Somerset West outside Cape Town with a chemical factory for raw materials at Krantzkop, close to Wellington in the Western Cape. Since then the company has grown to become a global player with a vision of being the best in solid propulsion products and energetic material applications.

Swartklip Products originated from the Ronden Manufacturing Company which was established in 1948 and manufactured fireworks. These pyrotechnic products led to the development and manufacture of new products such as railway signaling detonators and military products. The company was bought by Armscor in 1971 and named Swartklip Products. Since 1992 Swartklip became a division of Denel and shifted its business focus to the international arena. Swartklip has twice been awarded the chemical company category of the Technology 100 competition.

Naschem originated from the Lenz Factory which was used as an in explosives depot for the gold mines in 1896. During World War II the Lenz facility manufactured 25 million piece of ammunition for the North African Campaign. The facility was rejuvenated in 1970 as a result of South Africa’s need for self-sufficiency in the armaments field and the company Naschem came into being in 1978. During 1992 Naschem became a division of Denel (Pty) Ltd operating from the Boskop site near Potchefstroom.

Boksburg – the current facility was bought by Denel from Cemenco Holdings in 1996 and was included in the transaction of the new company Rheinmetall Denel Munition (RDM).in September 2008. Boksburg manufactures forged shell bodies and metal components of outstanding quality.

https://www.rheinmetall-defence.com/en/rheinmetall_defence/index.php#

Rheinmetall Defence

Force protection is our mission

Rheinmetall AG, publicly listed and based in Düsseldorf, Germany, is a powerful, internationally successful corporation. As an integrated technology group, Rheinmetall is a market leader in the areas of environmentally friendly mobility and threat-appropriate security technology. The group’s Defence sector is Europe’s foremost supplier of army technology and a longstanding partner of the armed forces. Rheinmetall Defence products set the global standard for excellence in a wide array of disciplines: from vehicle, force protection and weapon systems to infantry equipment and air defence, and from network-enabled warfare capabilities to electro-optics and simulation technology.

Providing friendly forces with the best-possible protection - that is our mission.