近年來因為全球化與地方主義的盛行，各國間紛紛引發簽定區域貿易協定的風潮，特別是近年來新興國家經濟改革開放，而許多已開發國家都面臨經濟發展的瓶頸，於是這些已開發國家便積極與新興國家洽簽經濟貿易協定，中國、印度與巴西等新興國家的經濟成長潛力相當驚人，許多跨國企業紛紛將廠房，漸漸移往這些新興國家，近年原物料成本的高漲，讓許多廠商在本國不堪生產成本提高，紛紛將一些低技術層次的生產線移往新興國家，也促使這些國家的人均所得不斷提高，間接提振了這些國家的經濟發展，也連帶提升人民的消費力與帶動許多內需產業的發展。
大陸市場因近年來的快速發展，不僅經濟成長率每年均維持一定幅度成長，讓大陸在全球的影響力與日俱增，而台灣更不應該錯過這塊龐大的市場商機，所以政府積極的與大陸接洽，透過不斷的協調與談判，逐步與大陸簽訂經濟貿易往來的互惠協議，特別是大陸市場仍處於高成長的起步階段，而基礎建設仍有很大的進步空間，大陸的汽車市場每年均有相當幅度的成長，反觀台灣則因內需市場小，成長幅度不大。
由本研究發現，政府與大陸洽簽兩岸經貿協定，短期內效果不明顯，長期來看，因為大陸目前整車市場的成長空間大，售後服務市場的規模也逐漸在萌芽，所以台灣零件廠商在大陸投資的策略會影響到其營運成果，台灣零組件廠商赴大陸投資還是採取與當地廠商合資，或結合國際大廠到大陸市場設立公司，不僅可鞏固既有廠商的訂單，更可藉此打入其當地的供應鏈，政府任務是維持兩岸經貿的正常往來。

SUMMARY
Thanks to its rapid expansion in recent years, the China market has enjoyed a stable rate of economic growth and consequently an ever-increasing influence worldwide. Since Taiwan cannot afford to be absent from the highly potential China market. Findings from this present study indicate that the Taiwan-China trade agreement may not show benefits anytime soon. In the long term, nevertheless, the strong potential of China’s market for whole cars will lead to expanding demand for after-sales services.

Keywords: Auto parts, Regional trade agreements
INTRODUCTION
Amid recent trends toward globalization and decentralization, countries around the world are eager to sign regional trade pacts. Over the past few years, many developed yet economically strapped countries scrambled to seek trade agreement talks with the reformed and “opened-up” emerging economies. A lot of multinational companies are relocating manufacturing facilities to emerging economies (e.g., China, India and Brazil), eyeing their impressive growth potential. As rising raw-material prices push up production cost lately, a lot of companies move production lines with low-level technology to emerging economies, hence the latter’s increased per capita income. That in turn sent the emerging economies expanding, with people’s consumption and domestic demand bolstered at the same time. By Michael Porter's Five Forces Model and diamond Model, analysis of the case studies five listing companies competitive advantage.
MATERIALS AND METHODS
Thanks to its rapid expansion in recent years, the China market has enjoyed a stable rate of economic growth and consequently an ever-increasing influence worldwide. Since Taiwan cannot afford to be absent from the highly potential China market, the authorities have launched an all-out effort to negotiate with China, on an ongoing basis, for multi-phase and mutual-beneficial trade agreements. It is worth noting that the China market is at the early stage of strong growth, with its infrastructure leaving much to be desired. That explains the considerable annual growth of China’s auto market compared to the limited expansion of its Taiwanese counterpart, which is troubled by a relatively small domestic market. By Michael Porter's five forces analysis model, indicating the company's SWOT. Analyze the operating results through financial data of the case studies five listing companies. The companies are mainly derived from the threat of competitors.
RESULTS AND DISCUSSION
Findings from this present study indicate that the Taiwan-China trade agreement may not show benefits anytime soon. In the long term, nevertheless, the strong potential of China’s market for whole cars will lead to expanding demand for after-sales services. The operating results of Taiwan-based auto part makers in China, therefore, are affected by their investment strategies. In other words, Taiwanese auto-parts firms are advised to invest in China either through joint ventures with local companies or through strategic alliances with international giants, so they may maintain the existing customer base while tapping into the local supply chain. What the Taiwanese authorities are supposed to do, therefore, is ensure that the cross-strait trade goes without hindrance. Therefore, manufacturers are required to take more than a way to reduce costs and efforts to obtain the relevant production certification. Not only improve product quality, but also expand the company's product line. The companies should actively explore new markets and new applications. Through understanding of the company's strengths and weaknesses, to further strengthen its own advantages. Even the company can gradually towards automation of production.
CONCLUSION
Only case studies five listing companies seems inadequate in short period.Relevant data obtains by Taiwan stock exchange.It can’t fully reflect the actual picture of the industry, and there are many Agreements on the signing of the ECFA with mainland supporting measures are not complete. The company also pay attention to that the application of new products. It is very important how to enhance the competitiveness of the company itself. Furthermore, we need to strengthen cooperation with foreign manufacturers. The company must Increase the chances to break into their supply chain. The company enhance the company's R & D capabilities and proactively offer new products to customers. The companies actively increase the proportion of the after market and effort to obtain the relevant production certification. The companies must improve product quality and expand the company's product line.Effective to develop the industry in the development of the China. The companies should actively explore new markets and new applications.

壹、中文部分
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