Tax Free Business in Dubai. Darco Services a “Khalid Al Hammadi group” established in the year 2001 is giving Business Setup services to start your own company in Dubai, UAE. Khalid Al Hammadi will be the Sponsor for your Company. Since the establishment of Darco Services, number of foreign companies had taken sponsorship with Darco Services sponsor and is doing business without having any problems since 2001. For more information please write to us.