Abstract: The smart recycling bin provides a new choice for consumers to recycle used products. However,the emergence of smart recycling channel brings the competition on the traditional collectors, and the manufacturer also face a new recycling market environment and re-adjusted the pricing strategy. According to the different channel participants in recycling channel, the smart recycling channel is considered as a third-party recycling. It is essentially different from those presented in previous models in which the third recycling channel was only considered as a whole, but the smart recycling channel in the third-party recycling is proposed in this paper. From the perspective of the channel design and pricing in closed-loop supply chain, three mathematical models are established under a single recycling channel and dual recycling channel, in which a uniform or a different transfer pricing for the manufacturer is considered. A Stackelberg game where the manufacturer is a leader and needs to decide the transfer price between smart collector and traditional collector is considered. Then numerical examples are proposed to analyze the effect of the parameters on the optimal results. Base on comparative analysis and numerical analysis, the research shows that:the recovery rate of collectors and profits of each member of the supply chain in dual recycling channel is higher than that of a single recycling channel. Comparing the different transfer pricing strategy in dual recycling channel, the manufacturer adopts uniform transfer pricing decision can maximize his profits and the smart collector' profits, but reduce the profits of retailer and the traditional collector. When the manufacturer adopts different transfer pricing strategies in dual recycling channel, the manufacturer's profit will increase compared with a single recycling channel,the profits of the traditional collector can maximize profits and the profits of other members in the supply chain will increase. The conclusion of this study provides a reference for the operation and management of the emerging smart recycling mode,and provide insights for the manufacturer in pricing decision andmanaging recycling channel.

Key words: smart recycling, third-party recycling, closed-loop supply chain, transfer pricing