Abstract Electrodeposited Copper Foil (ED Foil) is the most essential conductive material to PCB. With the recession of electronic industry and the appearance of Internet Economy Bubble for printed circuit board (PCB) industry, PCB industry slowed down its productivity around 2000 and the ED Foil industry in Taiwan had to face the vicious circle as the supply exceeds the demand. As for America, because of the declination of the industry, it is now almost out of the ED Foil industry which means that the global chief city of the field has changed from the States to Japan. However, with the high production costs and labor expenses, Japan is now suspending the enlargement of productivity, Therefore, the productivity of Taiwan till 2005 already ranked the top one in the world. Unfortunately, we are now facing the biggest competitor, China, who has tried enthusiastically to attract our ED Foil and PCB companies to move to his land, especially it has aimed the ED Foil industry as his top target to enkindle. This research has consulted several diverse documents from inside and outside Taiwan through the analyses of industrial structures, ¡§Diamond System¡¨ and ¡§SWOT Analysis¡¨ to have a clear understanding towards the construction of Taiwan¡¦s ED Foil industry and its ¡§competitive advantages¡¨. Owning these accomplished advantages as the base, we can come out the cooperative strategies for ED Foil industry¡¦s future and its ¡§Anti Competition Policy¡¨ according to the ¡§scenarios¡¨. We deeply hope that with these devices, we can strengthen the industrial¡¦s efficiency in our ED Foil¡¦s industry and at the same time, our status in this field can remain competitive around the world. The research found out that in ED Foil industry¡¦s area, the early players monopolized the market and twisted the market¡¦s efficiency at the same time. Therefore, those early players got the chance to earn a huge sum of money and as a result, some potential competitors joined the market to share the benefits. Besides, because of the rising concept of globalization among the mega electronic companies, more and more module and component companies are willing to be localized to correspond to the change. Simultaneously, the demand of both PCB and ED Foil has started to increase in Asia; therefore, the ED Foil industry in Taiwan is getting more and more prosperous because of the favorable geographical position. Moreover, high performing and large-sized facilities are adapted to produce high quality and low cost merchandizes efficiently to enhance the competitiveness in the industry. Therefore, the chain that connected with the downstream industry has become more completed and moreover, the bunching effect can be elaborate thoroughly. According to the research, we have discovered that there are many uncertainties within the operation of Taiwan¡¦s ED Foil industry such as the slight increase of the demand in Taiwan and the exports are overly centered on Hong Kong and China. Other concern like the percentage of the fixed prime cost is excessively high matters the efficiency of the productivity and as a result, a price war comes out easily because of the supply exceeds the demand. In the meantime, we have come out with the conclusion that the government should actively help the integration of the industry¡¦s future development. And we suggest that the ED Foil industry in Taiwan should take the co-opetition policy as follows: 1. The buying-associations that share the supplementary values of the recycling copper wires and R&D-associations can share the R&D cost in the area of the newly applying development will be erected to largely reduce the prime costs. Furthermore, an information exchange center will be provided for those associations to utilize others¡¦ useful experiences. 2. The business cooperative operations either with the same upstream or downstream companies all necessarily needed to be constructed. Those united cooperation such as Mergers & Acquisitions should be promoted within industries, including investments. These strategies will accelerate the development of the business. 3. New and prosperous markets such as Thailand and Vietnam need to be explored to disperse our export markets to decrease our dependency on China. 4. Complementary relationship and proper division of labors should be built up within cross-Strait without making other vicious competitions.