Climate change has caused huge negative impacts on the ecosystem. Carbon tax policy is an important regulatory means to reduce carbon emissions and mitigate climate change. Based on the carbon tax policy, this study discusses a dual-channel supply chain consisting of one manufacturer, one online retailer, and one offline retailer. Considering retailers’ bidirectional fairness concerns, the optimal carbon emission reduction strategy and the optimal pricing strategy of centralized and decentralized decision-making are discussed under consumers’ channel preference, respectively. On this basis, a coordination contract is proposed to realize the Pareto improvement of the dual-channel supply chain. We find that dual-channel retailers’ profits and prices are negatively correlated with the horizontal fairness concern coefficient and positively correlated with the vertical fairness concern coefficient. The profit of the manufacturer, the carbon emission reduction, and the bargaining power of consumers are all positively correlated with the horizontal fairness concern coefficient and negatively correlated with the vertical fairness concern coefficient. Maintaining an appropriate service level can maximize the profits of enterprises and positively affect the development of enterprises. Through the coordination contract, the supply chain can be promoted to form a win-win mode of complementary advantages.

This paper studies the impact of dual price sensitivity (product price sensitivity and extended warranty service price sensitivity) on the decision of the closed-loop supply chain(CLSC) where manufacturers are responsible for recycling and providing extended warranty service under different channel power structures. First, the dynamic game model is used to describe the three channel power structure models of centralized (C), Manufacturer-led Stackelberg (MS), and Retailer-led Stackelberg (RS); then mathematical optimization and reverse induction are used to derive supply chain decision-making and performance levels. On this basis, we further designed a contract to coordinate the supply chain, and use numerical examples to analyze and verify the impact of remanufacturing   cost savings and dual price sensitivity on the supply chain system. Research shows that channel power structures, remanufacturing cost savings and dual price sensitivity all have an important impact on the supply chain and corporate profits.

With the prevalence of live streaming e-commerce in the pandemic, brands and platforms cooperate with streamers to join this emerging e-commerce pattern. In the live streaming e-commerce supply chain composed of brand, third-party self-operated platform and streamers with different power, weak and dominant streamer, this paper investigates how the dominant streamer affects the supply chain decision-making under four scenarios composed of different selling formats and different power. Using a game-theoretic model, we find that the market demand can be enlarged by dominant streamer, and the dominant streamer tends to set lower price and lower marketing effort. Furthermore, the member who has the pricing power can obtain higher profit than the scenario in which they lose the power. And with the deeper of the degree of live streaming channel low price consensus among consumers, the streamers will invest more marketing effort as a compensation. Some managerial implications are showed in this paper.