Industrial computer is a niche industry. In the past, because of the certain level entry barrier, it is not a hot industry to be discussed. Now, Taiwan has more than a decade in technology products manufacturing experience, which contributes the industrial computer industry cluster. It is predictable that in 5-10 years, the industry is profitable for the reason that the application of the products and technology is more popular in daily life. Furthermore, the computer technology industry has changed to be R&D and technology innovation oriented from purely manufacturing and OEM, ODM. It comes with the result that there are more and more Taiwan International Procurement Office set up to be the communication contact between customers and manufacturers. However, recently for the effect of the phenomenon of Taiwanese manufacturer moving the factory to low labor cost countries, the advantage is not longer staying. Taiwan industrial computer manufacturers also get a lot of OEM/ODM orders. Many international system companies set up an procurement office in Taiwan for better communication. But the case company is not like the previous. It is a German added value distributor, who imports Taiwan industry computer parts and bare bone to sell locally. The reason for her to set up an international procurement office is to speed up the incoming material. The case company type, business model and procurement office values are different from the normal procurement office. This is why the study would like to understand case company¡¦s and her procurement office international purchasing strategy and competitive advantage, and observe how the company keeps the competitive advantage not t be threaten by manufacturer moving out. From the company background, the study find out industrial computer and Taiwan Procurement Office environment and opportunities, then it moves on analyzing company internationalization and procurement office setting up motivation. After knowing the reasons, the study concludes the international purchasing strategy. Finally, by having diamond model and SWOT analysis, then there is the competitive advantage. The result of the study is that the case company uses National Procurement, Proactive Strategy or Offensive Sourcing Strategy as her International Procurement strategy. The strategy is high involvement on internationalization and it helps to build up or strengthens the competitive advantage. Besides, mother company support is required because International Procurement Strategy has positive and direct connection with operation strategy. The reason for the case company to set up a Taiwan procurement office is in order to strengthen her differentiation strategy. Because Taiwan has better labor condition, near to suppliers and efficient logistic from industrial computer cluster, all make the obvious cost advantages. The suggestions for the case company are listed below: to be a know-how turntable supply chain or to go differentiation by having multi-function value added service to keep the advantage.