The Vice Custodian of the Two Holy Mosques, Prince Sultan bin Abdulaziz Al Saud received at the Royal Court at Al-Salam Palace here today the Rector of King Saud University (KSU) Dr. Abdullah bin Abdurrahman Al-Othman, the supervisors of Prince Sultan Research Chair for Hearing Disability, and a group of patients who were treated in the university hospitals. During the audience, the Vice Custodian of the Two Holy Mosques was briefed on the chair's objectives and achievements. The Vice Custodian of the Two Holy Mosques commended the efforts exerted by the chair's supervisors. Also, the Vice Custodian of the Two Holy Mosques received at the Royal Court at Al-Salam Palace here today members of the Board of Directors of Riyadh Techno Valley on the occasion of the issuance of the Cabinet's approval to establish KSU-based company specializing in knowledge investment in the Kingdom of Saudi Arabia. KSU Rector handed over a press report on hearing disability research and a report on KSU achievements and projects to the Vice Custodian of the Two Holy Mosques. The Vice Custodian of the Two Holy Mosques also received memorial gifts, including a model for the first Saudi car (Ghazal 1). Meanwhile, the Vice Custodian of the Two Holy Mosques Prince Sultan bin Abdulaziz Al Saud received at his office at the Royal Court at Al-Salam Palace here today the Deputy Chairman of the Board of Directors of Al-Jouf Cement Company Saad Al-Hudaib and members of the Company's Board of Directors. The audiences were attended by Prince Naif bin Abdulaziz Al Saud, Second Deputy Premier and Minister of Interior; Prince Dr. Misha'al bin Abdullah bin Musaed, Advisor to the Crown Prince; Prince Abdulaziz bin Bandar bin Abdulaziz, Deputy Chief of General Intelligence for Intelligence Affairs; Dr. Musaed bin Mohammed Al-Aiban, Minister of State and Member of the Cabinet; Ali bin Ibrahim Al-Hadithi, Chief of the Crown Prince's Court; and Abdullah bin Mishbib Al-Shihri, Director of the Crown Prince's Private Office.