Slamet Riyadi No. 286, Surakarta ( Solo ), Telp. 0271-719993,Fax. 0271-71880, Rubiyani SoewarnoEQUATOR TOUR, Jl. Urip Sumoharjo No. 47, Surakarta ( Solo ), Telp. 0271-642310, 656646,Fax. 0271 652312, Setyawan SanyotoESTEVAN GLOBAL,Jl. Slamet Riyadi 227 Kemlyan,