普惠制是发达国家给予发展中国家出口制成品和半制成品普遍的、非歧视的、非互惠的一种关税优惠制度。
Pu Hui is made is the developed country gives a developing country outlet finished products and half finished products is general , be not discrimination , blame mutual beneficial system of privilege of a kind of custom duty .
互惠关税