9801.10.30.00Trailers and semi-trailers of subheading 8716.31 or 8716.39, on condition that they: (a) are registered and licensed in a foreign country and operated in Canada with a vehicle licence issued by the appropriate provincial licensing authority; (b) leave from and return to the foreign country in the normal course of operation; (c) are exported within 30 days of the date of their importation or for an additional period not exceeding 24 months where a customs officer is satisfied that the exportation of the trailers or semi-trailers is delayed because: (i) of adverse weather conditions;(ii) the trailers or semi-trailers are being equipped, reconditioned, reconstructed, refurbished or repaired;(iii) the trailers or semi-trailers have a major equipment breakdown;(iv) the trailers or semi-trailers are detained under an order of a Canadian court, or under an Act of Parliament or the legislature of a province or any regulation made thereunder; or(v) the delivery of the goods to be loaded on or in the trailer or semi-trailer is delayed.The trailers and semi-trailers provided for in this tariff item may engage in the transportation of goods from one point in Canada to another point in Canada where:(a) that transportation is incidental to the international traffic of the goods;(b) the transportation does not occur outside the territorial limits of Canada; and(c) the trailer or semi-trailer has not entered Canada for the purpose of an in-transit movement through Canada to a point outside of Canada.

MFN, Most Favoured Nation: the rate for goods from most countries. free