<prompt> Translate the following text to EnglishKifungu cha 3622 na 3623 pia kinaelezea Uadilifu na usawa, pamoja na vigezo vingine, kama kuzingatia lazima kuzingatiwa katika kufanya mabadiliko ya kiwango na uainishaji wa barua.  <response>: Sections 3622 and 3623 similarly specify fairness and equity, together with other criteria, as considerations to be observed in making rate and mail classification changes. 