(a) No person who manufactures feed in this State or whose name appears on the label shall distribute a commercial feed unless the person has secured a license under this Act on forms provided by the Department which identify the name and address of the firm and the location of each manufacturing facility of that firm within this State. An application for the license shall be accompanied by a fee of $30 for each year or any portion thereof. All firm licenses shall expire December 31 of each year. Each commercial feed shall be registered before being distributed in this State, provided, however, that customer-formula feeds are exempt from registration. The application for registration shall be submitted to the Director on forms furnished or acceptable to the Director. The registration shall be accompanied by a label and such other information as the Director may require describing the product. All registrations are permanent unless amended or cancelled by the registrant.
     (b) A distributor shall not be required to register any product which is already registered under this Act by another person, unless the product has been repackaged or relabelled.
     (c) Changes in the guarantee of either chemical or ingredient composition of a registered product may be permitted provided that such changes would not result in a lowering of the feeding value of the product for the purpose for which designed.
     (d) The Director is empowered to refuse a product registration or a firm license not in compliance with the provisions of this Act and to suspend or revoke any product registration or firm license subsequently found not to be in compliance with any provision of this Act; provided, however, that no product registration or firm license shall be refused or revoked until an opportunity has been afforded the respondent to be heard before the Director.