撒哈拉以南非洲区域价值链使用累积的证据和潜力

Evidence and potentialitiesof regional value chains inSub-Saharan Africa using cumulation A quantitativeand firm level approach Evidence and potentialitiesof regional value chains inSub-Saharan Africa using cumulation A quantitativeand firm level approach © 2026, United Nations All rights reserved worldwide Requests to reproduce excerpts or to photocopy should be addressed to the CopyrightClearance Center at copyright.com. All other queries on rights and licences, including subsidiary rights, should be addressed to: United Nations Publications405 East 42nd StreetNew York, New York 10017United States of America Email: publications@un.orgWebsite: https://shop.un.org/ The findings, interpretations and conclusions expressed herein are those of the authors and donot necessarily reflect the views of the United Nations or its officials or Member States. The designations employed and the presentation of material on any map in this work do not implythe expression of any opinion whatsoever on the part of the United Nations concerning the legalstatus of any country, territory, city or area or of its authorities, or concerning the delimitation ofits frontiers or boundaries. Mention of any firm or licensed process does not implythe endorsement of the United Nations. This publication has not been formally edited. United Nations publication issued by the United Nations Conference on Trade and Development Evidence and potentialities of regional value chains in Sub-Saharan Africa using cumulationA quantitative and firm level approach Contents Acknowledgments............................................................................... viAbbreviations...................................................................................... viiExecutive Summary............................................................................. ixIntroduction........................................................................................xiii PART I - THE THEORY AND LAW OF CUMULATION......................... 1 1.Defining Cumulation....................................................................... 3 1.1Qualitative Aspects of Cumulation........................................................................ 31.1.1Full Cumulation.......................................................................................................... 31.1.2Diagonal or Partial Cumulation.................................................................................. 4 1.2Quantitative Aspects of Cumulation....................................................................... 61.2.1Bilateral or Donor Country Content........................................................................... 61.2.2Regional..................................................................................................................... 71.2.3Global......................................................................................................................... 71.2.4Extended Cumulation................................................................................................. 81.3Allocation of Origin under Cumulation or “Tariff Differentials”............................... 8 2.Types and Conditions of Cumulation under the EconomicPartnership Agreements with the EU.......................................... 11 2.1Kinds and Forms of Cumulation under EPAs with ACP Countries....................... 112.2Cumulation under the EU–SADC EPA.................................................................. 122.2.1Bilateral Cumulation................................................................................................. 122.2.2Regional Diagonal Cumulation................................................................................. 122.2.3Cumulation with EU MFN Duty Free........................................................................ 132.2.4Preferential DFQF Access Cumulation..................................................................... 132.2.5Limitations on Use of Material for Cumulation Purposes......................................... 142.2.6Procedures for the Entry into Force of Cumulation Provisions................................ 162.3Cumulation under the UK DCTS.......................................................................... 172.3.1Bilateral Cumulation................................................................................................. 182.3.2Intra-regional Cumulation......................................................................................... 182.3.3Inter-regional Cumulation......................................................................................... 202.3.4Extended Cumulation for LDCs................................................................................ 202.3.5Case-by-case Extended Cumulation....................................................................... 202.3.6Liberalisation of Rules of Origin for Garments...................................