Exemption for commercial samples unit threshold raised, expanding duty free import eligibility for export promotion under customs notification amendment. Substitution of the figure and word '15 units' with '50 units' in notification No. 154/1994 Customs: the change applies in the TABLE against S. No. 3 to condition (iv) and its proviso, and to condition (v), clause (A), sub clause (b), thereby increasing the unit threshold for the exemption on commercial samples, advertising materials and price lists imported under the International Convention and for samples for executing or securing export orders.