This paper explored how win-win cooperation and knowledge sharing in partnership of large conglomerates and SMEs(small and medium sized enterprises) that implement performance sharing influence on credibility between partners, durability of relationships and management performance. While win-win cooperation of SMEs has been accepted as a factor partially influencing management performance in previous researches, the results of the paper show that all factors except for the durability of relationships in collaborative corporate culture have significant and meaningful effects on management performance. This study suggests that a government needs to find a new mechanism to exclude an opportunistic behavior of large conglomerates. Also, it tries to maximize their profit, find new incentive systems, and help reduce biased profit from knowledge sharing. Moreover, it is needed that a government builds an infrastructure for knowledge sharing and extending networks, which enables enterprises to share their performance continually. Finally, this paper strongly recommends that altruistic coevolution should begin with the role sharing among governments, large conglomerates and SMEs and build a healthy knowledge ecosystem.