一、无歧视待遇原则,也称无差别待遇原则。指一缔约方在实施某种限制或禁止措施时,不得对其他缔约方实施歧视性原则待遇。任何一方不得给予另一方特别的贸易优惠或加以歧视,该原则涉及关税削减、非关税壁垒的消除、进口配额限制、许可证颁发、输出入手续、原产地标记、国内税负、出口补贴、与贸易有关的投资措施等领域。二、最惠国待遇原则。指WTO成员给予任何第三方的优惠和豁兔,将自动给予各成员方。该原则涉及一切与进出口有关的关税削减,与进出口有关的规则和程序、国内税费及征收办法、数量限制、销售、储运、知识产权保护等领域。三、国民待遇原则。指缔约方之间相互保证给予另一方的自然人、法人和商船同等的待遇。该原则适用于与贸易 First, the principle of non-discrimination treatment, also known as the principle of non-discrimination. Means that a Contracting Party shall not impose discriminatory treatment on other Contracting Parties when implementing certain restrictions or prohibitions. Either party may not grant or discriminate against the other party for special trade preferences or discriminations based on tariff reductions, elimination of non-tariff barriers, import quota restrictions, licensing, export and import formalities, mark of origin, internal tax burden, export subsidies, and Trade-related investment measures and other fields. Second, the most favored nation treatment principle. Refers to the WTO members to any third party concessions and abstentions, will be automatically given to all members. This principle covers all the customs import and export cuts, rules and procedures related to import and export, domestic taxes and fees, measures of quantity, sales, storage and transportation, intellectual property protection and other fields. Third, the principle of national treatment. Refers to the reciprocal assurances between the Parties granted to the other side of natural persons, legal persons and merchant shipping treatment. The principle applies to trade