Abstract: This paper considers a dual-channel closed-loop supply chain consisting of one manufacturer and one e-commerce platform, in which the platform acts as the manufacturer’s recycling channel or introduces a secondary market through refurbishing the used product. The firm’s optimal pricing and recycling decisions under different contract forms (wholesale-price contract versus revenue-sharing contract) are analyzed in both cases in which the platform does not introduce or introduces the secondary market by applying the game-theoretical approach. It is found that when the substitution degree between different sales channels is high, the manufacturer may prefer the revenue-sharing contract if the commission rate charged by the platform is higher, but may prefer the wholesale-price contract if it is lower. The introduction of a secondary market by e-commerce platforms will incentivize manufacturers to increase their recycling prices of the used product, while potentially leading to either an increase or decrease in the volume of recycled product. Additionally, while the introduction of a secondary market may reduce the manufacturer’s profit, its impact on the profit of e-commerce platform remains context-dependent (either positive or negative). Investigating the firms’ optimal decision-making in a dual-channel closed-loop supply chain and the impact of the e-commerce platform’s introduction of secondary market provides a valuable complement to existing research on closed-loop supply chain and secondary market.

Key words: dual-channel closed-loop supply chain, e-commerce platform, secondary market, pricing, recycling

摘要： 本文研究一个由制造商与电商平台组成的双渠道闭环供应链系统。在该系统中，制造商通过自有渠道和电商平台销售产品并开展回收业务；电商平台除作为制造商的回收渠道外，还可通过翻新废旧产品开辟二手市场。基于电商平台是否开辟二手市场两种情形，运用博弈论方法，对比分析了企业在不同合同形式（批发价合同与收益共享合同）下的最优定价与回收策略。研究结果表明，当不同销售渠道之间的替代程度较高时，制造商在电商平台佣金比例较高时更倾向于选择收益共享合同，而在佣金比例较低时则偏好批发价合同。值得注意的是，电商平台开辟二手市场会促使制造商提高废旧产品回收价格，并可能提高或减少电商平台废旧产品回收量。此外，开辟二手市场会导致制造商利润下降，但电商平台的利润可能增加也可能减少。本研究对双渠道闭环供应链中企业的优化决策以及电商平台开辟二手市场的影响进行了深入探讨，是对现有闭环供应链与二手市场相关研究的有益补充。

关键词: 双渠道闭环供应链, 电商平台, 二手市场, 定价, 回收