15. Also stresses the importance of the Doha mandate for negotiations on market access for non-agricultural products, which should aim to reduce or, as appropriate, eliminate tariffs, including the reduction or elimination of tariff peaks, high tariffs and tariff escalation, as well as non-tariff barriers, in particular on products of export interest to developing countries, and reaffirms that preferences granted to developing countries pursuant to the Decision of the Contracting Parties on Differential and More Favourable Treatment, Reciprocity and Fuller Participation of Developing Countries of 28 November 1979 ("Enabling Clause")L/4903. Available on the Internet at http://docsonline.wto.org. should be generalized, non-reciprocal and non-discriminatory;
15．还强调多哈任务对关于非农产品市场准入问题的谈判的重要性，此类谈判的目的应当是减少或酌情消除关税，包括减少或消除关税高峰、高关税和关税升级以及非关税壁垒，尤其是对发展中国家出口利害攸关的产品，并且重申按照1979年11月28日《缔约国关于差别和更优惠待遇、对等性关系以及使发展中国家更充分参与的决定》（"授权条款"）L.4903。可在互联网http://docsonline.wto.org上查阅。 给予发展中国家的优惠均应是普遍的、非对等的和无歧视的；