ArabO Jordan Contractors مقاولات الأردن
An autonomous firm of consulting architects and engineers; established in 1975 Sigma today is a leading engineering consultancy firm not just in Jordan but among the largest engineeringconsulting firms in the region Sigma Consulting Engineers Sulaiman AlNabulsi St. Box 20076 Amman 11118, Jordan Tel: + 962 6, Fax + 962 6