SECTION 23E.   Applicability of advance ruling.-
 

(1) The advance ruling pronounced by the Authority under section 23D shall be binding only-
 
  (a) on the applicant who had sought it ;
 
  (b) in respect of any matter referred to in sub-section(2) of section 23C;
 
  (c) on the Commissioner of Central Excise, and the Central Excise authorities sub-ordinate to him, in respect of the applicant.
 
(2) The advance ruling referred to in sub-section (1) shall be binding as aforesaid unless there is a change in law or facts on the basis of which the advance ruling has been pronounced.