s 18 Question in respect of goods deemed to be dutiable
If any question arises whether any particular goods are or are not included in a class of goods appearing in an order under subsection 6(1), such question shall be decided by the Director General. Certificate of Director General admissible in evidence 18 A. Notwithstanding anything contained in any other written law or rule of evidence to the contrary, where in any proceedings a document purporting to be a certificate under the hand of the Director General in respect of a decision made by him under section 8B or 18 is produced, such document shall be admissible in evidence and shall be accepted as sufficient evidence of the facts therein stated and the Director General shall not be required to give evidence in respect of such decision unless the court otherwise orders.