Ir. Benny Koloway Director PT. TIGENCO GRAHA PERSADA.

Jl. Pahlawan Revolusi 100 B Pondok Bambu Jakarta Timur – 13430 INDONESIA Tel. : +62 21 8660 0710-11 Fax. : +62 21 8660 0709 E-mail :tigenco@cbn.net.id, info@tigenco.com

Andrianto H Nugroho, ST, MT. Director Tel. : +62 21 8660 0710-11 Fax. : +62 21 8660 0709 HP. : +62 818 469 562 E-mail :andrianto@tigenco.com, andrihcc@yahoo.com