全球化與資訊科技的進步，企業將生產活動部分外包，國際分工愈來愈盛行。產品的製程常由多國分擔製造，最終在勞力豐富的地區完成，才售往消費市場；零組件生產者的製作過程需要其他國家進口的原材料與技術，形成涵蓋多國的產業供應鏈體系。但是當前的貿易統計以貨品的交易價值為計算基礎，負責組裝及出口最終產品的國家，因出口金額高，成為最終財出口國，可是真正創造的價值相當有限。因此以傳統方式以交易價值計算的雙邊貿易關係可能出現偏差。在小型經濟體中，國內資源有限，很多原料及零件必須自國外進口，接著加工後再出口，因此出口品的境內含量較低，以附加價值計算的貿易值亦較低。
本研究探討台灣各產業出口附加價值的演變，以及研發投資、對國外投資等可能因素對產業出口毛額和外國最終需求中國內附加價值影響的比較。利用國際經濟合作暨發展組織(OECD)1995、2000、2005、2008 及 2009 年的附加價值貿易統計進行實證分析。結果顯示，第一，台灣各產業的出口國內附加價值佔出口毛額比例有逐年下降的趨勢，南韓及中國亦有類似的現象。第二，台灣多數產業對貿易夥伴的出口毛額或是外國最終需求中國內附加價值皆受到對中國投資的負面影響，原油價格上升令國內附加價值佔出口毛額比例下降，對中國投資則造成該比例上升。

With globalization and advance in information technology, firms tend to offshore their production activities, and international division of labor has become increasingly popular in recent years. Production process is often shared by multiple countries and final assembly is completed in labor abundant countries. Producers of parts and components (such as Taiwan) need to import materials and intermediate inputs, and their products are exported to assembling countries for further process, and then exported to the final destination. Fragmentation of production procedures forms the global supply chains and poses challenge to measuring country contribution to international trade. Current trade statistics is based on the transaction value of goods, making the assemblers of finished product the final exporters. However, the value-added attributable to these countries is often quite limited. In the presence of global value chains, bilateral trade relation measured in traditional way may not reflect the true country contribution to international trade and there has been a call for using value-added to measure international trade.
This thesis sets out to trace changes in trade in value-added for Taiwanese manufacturing industries and evaluate the relative importance of possible determinants such as foreign direct investment ( FDI ) in China, investment in R&D, and price of crude oil. The empirical analysis uses the Trade in Value-added ( TiVA ) statistics published by the Organization for Economic Cooperation and Development ( OECD ) in years 1995, 2000, 2005, 2008 and 2009. This study have two main findings. First, the share of domestic value-added in gross exports for Taiwanese manufacturing industries has declined over time, and South Korea and China have similar experience. Second, both gross exports and domestic value-added embodied in foreign final domestic demand are negatively affected by FDI con the other hand, is negatively affected by the soaring price of crude oil and positively influenced by FDI in China.

參考文獻
杜巧霞 (2013) 【以附加價值衡量貿易與對貿易政策的新思維】，WTO及RTA電子報，第358期，2013年4月26日。
Blonigen, Bruce A. 1998 “In Search of Substitution Between Foreign Production and Exports.” Journal of International Economics, Vol. 53(February 2001), pp. 81-104.
Baldwin, Richard, 2013. “Global supply chains: why they emerged, why they matter, and where they are going” chapter 1 in Global Value Chains in a Changing World, edited by Deborah K. Elms and Patrick Low. WTO, Fung Global Institute and Temasek Foundation Centre for Trade & Negotiation.
Bems, Rudolfs and Robert C. Johnson, 2012. “Value-Added Exchange Rates.” NBER Working Paper 18498
Bems, Rudolfs and Robert C. Johnson, 2012. "Value-Added Exchange Rates," NBER Working Papers 18498, National Bureau of Economic Research, Inc.
Chao, L., L. Luk, and A. Back. 2009. Sales of iPhone in PRC Set Under 3-Year Accord. Wall Street Journal. 31
Daudin, Guillaume, Christine Rifflart and Danielle Schweisguth, 2011. “Who produces for whom in the world economy?” Canadian Journal of Economics 44(4): 1403–1437
Eaton, J. and Tamura, A. 1994. Bilateralism and Regionalism in Japanese and U.S. Trade and Direct Foreign Investment Patterns. NBER Working Paper No. 4758.
Graham, E.M. 1994. US Direct Investment Abroad and US Exports in the Manufacturing Sector: Some Empirical Results Based on Cross Sectional Analysis. mimeograph. Washington: Institute for International Economics.
Han,Jun, Runjuan Liu, Junsen Zhang, 2011. “Globalization and wage inequality: Evidence from urban China.” Journal of International Economics 87 (2012) 288–297
Kee, Hiau Looi and Heiwai Tang, 2015. “Domestic Value Added in Exports: Theory and Firm Evidence from China” American Economic Review, Resubmitted
Kim, June-Dong and Kang, In-Soo 1997. "Outward FDI and exports : the case of South Korea and Japan" Journal of Asian economics.
Koopman, Robert, William Powers and Zhi Wang, Shang-Jin Wei, 2010. “Give Credit Where Credit is Due: Tracing Value Added in Global Production Chains” NBER Working Paper 16426
Koopman, Robert, Zhi Wang and Shang-Jin Wei, 2012. “Tracing Value-Added and Double Counting in Gross Exports” NBER Working Paper 18579
Kasahara, Hiroyuki & Yawen Liang and Joel Rodrigue, 2013. "Does Importing Intermediates Increase the Demand for Skilled Workers? Plant-level Evidence from Indonesia," CESifo Working Paper Series 4463, CESifo Group Munich.
Lee, K. 1994. “Structural Adjustment and Outward Direct Foreign Investment in Korea.” Seoul Journal of Economics 1994, 7(2): 179-2 11.
Lipsey, R. 1995. “Outward Direct Investment and the U.S. Economy.” Pp. 7-41 in The Effects of 7”ation on Multinational Corporations. edited by M. Feldstein et al. Chicago: The University of Chicago Press.
Fung, Loretta, Jin-Tan Liu and Fa-Min Wang (2013). “Are FDI in China and Parent Firm Exports Substitutes or Complements? An Empirical Study of Taiwanese Manufacturing Firms.” Taiwan Economic Review, 41(2): 167–194.
Lipsey, R. and Weiss, M.Y. 1981. “Foreign Production and Exports in Manufacturing Industries,” Review of Economics and Statistics 63:488-494. -. 1984. “Foreign Production and Exports of Individual Firms,” Review of Economics and Statistics, 66:304-308.
Ryou, J.-W. 1995. Koreas Outward Direct Foreign Investment and the Division of Labor in the Asia-Pa&c. mimeograph.
Koopman, Robert William Powers, Zhi Wang and Shang-Jin Wei, 2010 “Give Credit Where Credit Is Due: Tracing Value Added in Global Production Chains” NBER Working Paper No. 16426
Sachs, J.D., and Warner, A. 1995. Economic Reform and the Process of Global Integration. Brookings Papers on Economic Activity, 1995:1, 1-118.
Wang, J.C. and Tsai, K.H., 2003. Productivity growth and R&D expenditure in Taiwan’s manufacturing firms. NBER Working Paper 9724.
Xing, Yuqing and Neal Detert, 2010. "How the iPhone Widens the United States Trade Deficit with the People’s Republic of China," Trade Working Papers 23280, East Asian Bureau of Economic Research.