Head Office, Jakarta
Summitmas I, Lantai 15 Jl. Jenderal Sudirman Kav. 61-62 Jakarta 12069.
P.O. BOX 6917 Jakarta Selatan, Indonesia
Telp (+6221) 2520185.
Fax (+6221) 2524278.
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Liaison Office, Medan
Jl. R.A Kartini 21, Medan 20152, Sumatera Utara.
P.O.BOX 1200 Medan.
Telp: (+6261) 4556946
Fax(+6261) 4537885
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Smelting Plant Office, Kuala Tanjung
Kuala Tanjung. Kecamatan Sei Suka 21257.
Kabupaten Asahan Sumatera Utara, Indonesia
P.O. BOX 1 Kuala Tanjung.
Telp: (+62622) 31311.
Fax: (+62622) 31001.
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Power Plant Office, Paritohan
Paritohan. Kecamatan Pintu Pohan Meranti 22384,
Kabupaten Toba Samosir, Sumatera Utara, Indonesia
P.O. BOX 1 Porsea.
Telp: (+62622) 31331.
Fax (+62622)31332.
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