The product line extension is one of important rivalry instruments for the multi-product firms, also a study focus of new empirical industrial organization.
产品线扩展是多产品企业的主要竞争手段之一，也是新实证主义产业组织理论研究的重点内容。
The product line extension is one of important rivalry instruments for the multi-product firms, also a study focus of new empirical industrial organization.
产品线扩展是多产品企业的主要竞争手段之一，也是新实证主义产业组织理论研究的重点内容。
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