A discriminatory tax; preferential tariff rates; preferential treatment; a preferential shop gives priority or advantage to union members in hiring or promoting. 优惠税;优惠税率;优惠待遇;一家对工会成员在雇用和提升上给予优先权或好处的优惠商店。
Based on the difference of economic integration, it is divided into six types: special tariff zone, free trade zone, tariff union, common market, currency and economic liaison and complete economic integration. 根据经济一体化程度的不同,将其划分为特惠关税区、自由贸易区、关税同盟、共同市场、货币与经济联盟和完全的经济一体化等六种不同的类型。
Common external tariff, rules of origin, and competition rules are tools employed by customs union to protect its internal interests. Meanwhile, multilateral disciplines restrict the protection in case to derogate the multilateral rules. 对外共同关税、原产地规则和竞争规则是关税同盟为了保护内部利益而经常采用的贸易限制工具,同样补偿性谈判和争端解决被认为是维护多边纪律的重要制度。