1855
Siemens and Halske (S&H) receives its first order from the Dutch Colonial Ministry in ‘s-Gravenhage for the construction of a telegraph line in the Dutch East Indies.
1879
The first S&H agency for the Dutch East Indies begins operating under the name Commanditaire Vennootschap Wisse, Piccaluga & Co., s’-Gravenhage.
1883
S&H installs a lighting system in the Sultan of Djokjakarta’s palace on the island of Java.
1891
The Dutch East Indies are served by the S&H Technical Office in 's-Gravenhage
1909
The first own agency in Surabaya as branch office of SSW is established
1913
SSW receives an order from Billiton Maatschappij to construct a power station. The company builds a hydroelectric power station for the Salida gold mine.
1921
A new branch office is opened in Bandoeng.
1935
S&H and SSW transfer their agency for the Dutch Indies to Nederlandsche Siemens Maatschappij N.V., based in The Hague.
1950
S&H and SSW authorize the Danish Indonesian Trading Association Ltd. – based in Copenhagen – to represent their interests. S&H receives orders to supply private branch exchanges and teleprinters.
1955
The Siemens Indonesia Office (SIO) is set up in Jakarta.
1961
The state-run Tri Bhakti trade company becomes S&H’s official agent for business with the government and public authorities.
1968
The Siemens Indonesia Office is converted to a Regional Company.
1975
The Indonesian Postal Administration awards Siemens the largest single order for teleprinter technology the company has ever received.
1976
Siemens builds a 400-MW power station in Kota Baja.
1989
A machine factory is opened in Cilegon.
1997
Siemens is awarded a contract to construct a combined-cycle power plant in Surbaya, East Indonesia.
2002
The country’s biggest fixed-line network operator, P.T. Indosat Tbk, of Jakarta, contracts Siemens to build a new national fixed-line telephone network
2007
Siemens wins major contracts for natural gas liquefaction plants in Indonesia