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Eng/Mohammed Abd Elkhalek Elbana
Civil Engineer
Works at OSG Company
Construction Manager
DOUBLE TREE By HILTON PROJECT
GIZAN,SAUDI ARABIA
Mobile :+966596606635
E-mail :engelbana6@gmail.com
How 5 Tech Giants Make Their Billions
The Revenue Streams of the Five Largest Tech Companies
SOURCE
WWW.ENGELBANA.COM