There is no difference between ''Registrars of companies'' and ''Company's registrars''.

registrar or register = مأمور تسجيل / مسجل / أمين سجل

Registrars of Companies (ROC) appointed under Section 609 of the Companies Act covering the various States and Union Territories are vested with the primary duty of registering companies floated in the respective states and the Union Territories and ensuring that such companies comply with statutory requirements under the Act. These offices function as registry of records, relating to the companies registered with them, which are available for inspection by members of public on payment of the prescribed fee. The Central Government exercises administrative control over these offices through the respective Regional Directors.

مصلحة تسجيل السجلات التجارية