Chairman of the Royal Commission in Jubail, Engineer Mustafa bin Mohammed Al Mahdi, confirmed that the auspicious visit of the Custodian of the Two Holy Mosques King Salman bin Abdulaziz Al Saud to the Eastern Region is an embodiment of the continuous attention we find from the wise leadership since the time of the founder late King Abdulaziz bin Abdul Rahman Al Saud. Al-Mahdi explained that Jubail Industrial City has been a major source of human and industrial development for more than 40 years and it is one of the main economic sources of the Kingdom.