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铁矿石市场的垄断广为市场所诟病,但却缺乏有效的证明。对矿山巨头们的市场行为进行分析,可发现矿山巨头们具有明显的市场协同行为,尤其是在中国市场上表现最为明显。基于垄断厂商的定价理论,文章建立了在铁矿石需求不断增长情况下的卖方寡头垄断模型,并详细测算了模型的各项参数。通过把模型测算的结果和实际市场数据对比分析,证明了这一模型的有效性,验证和说明了矿山巨头们如何运用其市场势力,形成隐性卡特尔组织的事实。
The monopoly of the iron ore market is widely criticized by the market, but it lacks effective proof. An analysis of the market behavior of mine giants shows that the mine giants have obvious synergies in the market, especially in the Chinese market. Based on the pricing theory of monopoly firms, the article establishes the seller oligopoly model under the condition of increasing iron ore demand, and calculates the parameters of the model in detail. By comparing the result of model calculation with the actual market data, the validity of this model is proved, and the fact that the mining giants use their market power to form the hidden cartel organization is proved.