Office :
PT. CALLISTA GLOBAL ENERGI
Jl. Majapahit No.26 Blok S & T
Golden Centrum, Jakarta 10160
Indonesia
Phone : +62 21 3890 5555
Phone : +62 21 3890 8889
Mobile : +62 822 187 88 999
E-mail : aw@callistaglobalenergy.com
Website : http://www.callistaglobalenergy.com