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3. In any case in which a maximum import duty is not negotiated under paragraph 2 [a), the Member establishing, maintaining or authorizing the import monopoly shall make public, or notify the Organization of, the maximum import duty which it will apply in respect of the product concerned. 4. The import duty negotiated under paragraph 2, or made public or notified to the Organization under paragraph 3, shall represent the maximum margin by which the price charged by the import monopoly for the imported product (exclusive of internal taxes conforming to the provisions of Article 18, transportation, distribution and other expenses incident to the purchase, sale or further processing, and a reasonable margin of profit) may exceed the landed cost; Provided that regard may be had to average landed costs and selling prices over recent periods ; and Provided further that, where the product concerned is a primary commodity which is the subject of a domestic price stabilization arrangement, provision may be made for adjustment to take account of wide fluctuations or variations in world prices, subject where a maximum duty has been negotiated to agreement between the countries parties to the negotiations. 5. With regard to any product to which the provisions of this Article apply, the monopoly shall, wherever this principle can be effectively applied and subject to the other provisions of this Charter, import and offer for sale such quantities of the product as will be sufficient to satisfy the full domestic demand for the imported product, account being taken of any rationing to consumers of the imported and like domestic product which may be in force at that time. 6. In applying the provisions of this Article, due regard shall be had for the fact that some monopolies are established and operated mainly for social, cultural, humanitarian or revenue purposes. 7. This Article shall not limit the use by Members of any form of assistance to domestic producers permitted by other provisions of this Charter. Article 32 Liquidation of Non-commercial Stocks 1. If a Member holding stocks of any commodity accumulated for non-commercial purposes should liquidate such stocks, it shall carry out the liquidation, as far as practicable, in a manner that will avoid serious disturbance to world markets for the commodity concerned. 2. Such Member shall: (a) Give not less than four months public notice of its intention to liquidate such stocks ; or (b) Give not less than four months prior notice to the Organization of such intention.