President/CEO:
  Ass.Prof. Dr. Stoyan Djambazov
  Gravelita Ltd
  #11 - 13 Phillip Stanislavov Street
  P.O. Box 1505
  Sofia, Bulgaria
  Tel: 00359 2 843 56 40
  Fax: 00359 2 843 56 40
  Email: stoyan.djambazov@gravelita.com

Partner/President Sales&Marketing
  Kaloyan Djambazov
  Gravelita Ltd
  #11 - 13 Phillip Stanislavov Street
  P.O. Box 1505
  Sofia, Bulgaria
  Tel: 00359 885717796
  Fax: 00359 2 843 56 40
  Email: kaloyan.djambazov@gravelita.com

IT Manager
  Dimitar Djambazov
  Gravelita Ltd
  #11 - 13 Phillip Stanislavov Street
  P.O. Box 1505
  Sofia, Bulgaria
  Tel: 00359 2 843 56 40
  Fax: 00359 2 843 56 40
  Email: dimitar.djambazov@gravelita.com