(a)no national permit shall be issued-(i)to an individual owner if he already holds in his own name three or more valid national permits, or, when he holds valid national permits as well as valid inter-State region permits, if the aggregate number of such permits is three or more;(ii)to a company which already holds in its Own name seven or more valid national permits, or, when it holds valid national permits as well as valid inter-State region permits, if the aggregate number of such permits is seven or more;