preferential tariff treatment meaning in English

关税优惠
优惠关税待遇

Removing preferential tariff treatment for exports from china s neighbors of boric acid and approximately 20 other chemicals
取消对中国邻国硼酸出口和其他近20种化学品的优惠关税待遇。
Preferential tariff treatment as a typical case of tax incentives is analyzed in this paper to forecast the impacts on foreign capital inflow in the process of " uniting the domestic and foreign enterprises ' income taxes into one "
由于进口关税优惠政策是唯一经历了实施和取消过程的外商投资企业税收优惠政策，因此对它的研究有助于我们预测即将实行的内外资企业所得税合并对流入中国的外资额的影响。