Abstract: Effective and efficient platform service and logistic operations crucially influence the success of firms in the newly emerged e-commerce. The logistics industry in China is fragmented, which leads to the duplication of logistics information system functions, the irregular and disconnected data, and asymmetric supply and demand information. The current literature related to e-commerce logistics tend to be qualitative, lack of quantitative analysis about how firms could effectively cooperate with partners. This study aims to investigate a logistics service supply chain system which involves in two functional logistics service providers, a single logistics service integrator and a supply chain service platform. There are four kinds of cooperative models are developed: the centrally cooperative system, the decentralized system, the L-F cooperative system and the F-F cooperative system. It is assumed that consumer demands are determined by sales price of service and logistics device level. Then, the optimal service level, the optimal wholesale price of service, the optimal sales price of service, and total supply chain profits are given by game-theoretic model. Furthermore, numerical examples illustrate the impact of unit information fee and sensitive factors of service level on the service price, market demand and the profits. It is found that the total supply chain profits of three cooperative models are always more than that of the decentralized system. The sale price of centralized system is even lower than the wholesale price of the decentralized system, the total market demand is significantlly increase and the optimal service level remains the same. Research results also show that when the supply chain service platform makes rules of the unit information fee, high charge is undesirable for the whole market and the players. Therefore, reasonable scope of charge can help the whole market have a long-term, steady and healthy development. The results of this study can help firms determine their practical strategies.

Key words: logistics service supply chain, supply chain service platform, cooperative model, service level