1929
First business contact in Hijaz (Jeddah)
1931
S&H is represented in Saudi Arabia by de Haas & Co. , Jeddah (dissolved in 1934)
1938
Export shipments to Saudi Arabia
1952
S&H signs an agency agreement for the telecommunications area with M. Mardambey & M. Ojjeh, Jeddah (until 1955)
1954
E.A. Juffali & Bros., Jeddah, becomes the agent of SSW in Saudi Arabia and in 1955 also of S&H
1956
Construction of a wide area radio network inaugurated by King Saud I
1957
A Siemens Resident Engineer is delegated to Saudi Arabia
1968
Construction of Saudi Arabia 's first 110 kV high-voltage network in Jeddah
1971
Siemens builds a sea-water desalination plant on the Arabian Gulf
1976
Founding of Arabia Electric Ltd. (AEL), a joint venture between Siemens and E.A Juffali & Bros.
1978
Siemens supplies Saudi Arabia 's largest cement factory, located in Dammam, with process automation
1983
Founding of a sub-agency by Juffali & Bros., AEL (Equipment)
1987
Siemens and Juffali/AEL(E) open a medical engineering agency
1990
Establishment of an AEL service center
1999
Siemens Ltd. registered as joint venture between E.A. Juffali and Siemens AG as a majority shareholder
2002
Acquisition of the former Westinghouse subsidiary ISCOSA
2004
Saudi Arabian women are employed for the first time
2006
Siemens builds a turnkey combined steam power plant and desalinization facility for Shuaibah Water and Electricity Company in Riyadh, in cooperation with Doosan Heavy Industries & Construction