Drawing upon the tenets of Relational Contracting Theory (RCT), augmented by Transaction Cost Economics (TCE) and Social Capital Theory (SCT), this paper seeks to determine the role of supply chain governance, composed of both upstream and downstream dyad governance for customized products within the network established by three-tier structures. The empirical findings show that supply chain governance within the three-tier structures can be composed of upstream and downstream dyad governance. Specifically, upstream dyad governance mainly consists of market and nonmarket unilateral governance, while downstream dyad is organized by the portion of market and nonmarket (unilateral and bilateral) governance. The research also demonstrates that both upstream and downstream dyad governance differentiate supply chain governance within the three-tier structure. Interestingly, however, a comparison of both upstream and downstream dyads shows consistency in regard to governance. Likewise, supply chain governance requires an admixture of nonmarket governance (unilateral and bilateral) to ensure the desired level of product customization.

本文借鉴关系契约理论 (RCT) 的原则，以交易成本经济学 (TCE) 和社会资本理论 (SCT) 为基础，旨在确定供应链治理的作用，由上游和下游二元治理组成，以实现定制化通过三层结构建立的网络内的产品。实证结果表明，三层结构内的供应链治理可以由上游和下游二元治理组成。具体而言，上游二元治理主要由市场和非市场单边治理组成，而下游二元治理则由市场和非市场（单边和双边）治理部分组成。该研究还表明，上游和下游二元治理在三层结构中区分供应链治理。然而，有趣的是，上游和下游二元组的比较显示了治理方面的一致性。同样，供应链治理需要混合非市场治理（单边和双边）以确保产品定制的理想水平。