N607, Negin Tower, Africa Blv., 1969734664 Tehran Iran, Islamic Republic Telephone +98 21 88880507 Fax +98 21 88880679 info@dahian-co.com http://www.dahian-co.com

No. 97, 3rd Floor, Mollasadra Passage, Mollasadra St., 7193613918 Shiraz Iran, Islamic Republic Telephone +98 71 36473173 Fax +98 71 36473613 info@dgdena.com http://www.dgdena.com

Unit 9*11 East Wing.no83 Khaghani, Khaghani Building Somayeh Avenuei, 1571838318 Tehran Iran, Islamic Republic Telephone +98 21 88321517 Fax +98 21 88835224 info@chitotech.com http://www.chitotech.com

P.O. Box 1533883931, 8415683121 Esfahan Esfahan Iran, Islamic Republic Telephone +98 31 33932276 Fax +98 31 33932275 info@behyaar.com http://www.behyaar.com

No. 113, 12th Floor, B Building, Kaveh Complex, Azadi St., 1313655477 Tehran Iran, Islamic Republic Telephone +98 21 66581294 Fax +98 21 66581292 http://www.hisept.com

Unit 1, No. 3, 58th St., Asad Abadi St., (Yousef Abad St.), 1436864843 Tehran Iran, Islamic Republic Telephone +98 21 88054231 Fax +98 21 88051647 info@avecinna.com http://www.avecinna.com

No. 126, Moezzi St., 6461174558 Dezful Iran, Islamic Republic Telephone +98 61 42554302 Fax +98 61 42554302 info@avanteb.com http://www.avanteb.com