West zone office:
Jalan Sei Batu Gingging No. 69, Kel. PB Selayang I, Kec. Medan Selayang Medan 20131 INDONESIA, Telephone 62-61-4503773
East zone office:
Jalan KH Malik No. 50 A Buring – Malang 65132, INDONESIA, Telephone 62-341-7410010
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