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With the development of the two-sided market, many platform enterprises classify their users into different types and cooperate with them with different strategies. The extant literature mainly explores the pricing and investment decisions for the platform, but pays little attention to the classification of sellers when making decisions. This paper investigates the investment of value-added service and pricing strategies for an e-commerce platform with competing sellers. Specifically, this paper considers a two-sided platform that is composed of an e-commerce platform, buyers and sellers. Sellers with high performance requirement and with low performance requirement compete for the buyers in the platform. This paper assumes that each buyer will choose the sellers’ type immediately after entering the platform and buy a unit of product in the platform. Through theoretical analysis the authors show that, the platform will gain more profits by investing in value-added services for type-A sellers and it will obtain the optimal profit when the transaction fee is moderate.

In this paper, we study the financing decision for an emission-dependent supply chain with one supplier and one manufacturer, both of which are financially constrained and in need of short-term financing for emission abatement. Three kinds of financing strategies are considered: (1) bank financing separately (BFS), (2) the manufacturer obtains partial loans from the bank, and borrows from the supplier (MPB), (3) the supplier obtains partial loans from the bank, and borrows from the manufacturer (SPB). The BFS is viewed as a noncollaborative financing strategy, and the MPB and SPB are collaborative financing strategies.The financing strategies are obtained at the point where wholesale price, production quantity, and emission reduction are endogenously determined. We found that the collaborative financing strategy is beneficial to the supplier and the whole supply chain compared with the noncollaborative financing strategy, the SPB strategy may outperform the MPB strategy for the supplier and the whole supply chain, depending on sharing proportion. The advantage of the MPB and SPB strategies relative to the BFS strategy mainly depends on sharing proportion from the manufacturer's perspective. We demonstrated that the collaborative financing strategy is the equilibrium strategy of the