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In the previous researches, the strategies for multilateral negotiation are simple methods that bring own proposal close to opponentpsilas proposal. However, in multilateral negotiation, it is required to reflect each otherpsilas preferences for increasing optimal outcomes. This strategy is called win-win strategy. In order to realize win-win negotiation strategy, we should consider two points. The first point is to take account of each otherpsilas preferences. Considering each otherpsilas preferences enables to increase mutual benefits. The second point is a concession strategy to opponents. The difference of each otherpsilas concession strategy causes imbalance of their benefits. For example, when an agent makes concession largely and an opponent makes little concession at the beginning of the negotiation, the agent might make a loss. The solution of this problem is that the agents acquire the concession strategy that can respond to various opponents. This paper is proposed an extended model from our previous research.