In　a　closed-loop　supply　chain　for　electronic　products,　the　manufacturer＇s　priority　is　to　enhance　the　residual　value　of　the　collected　end-of-use　product　and　decide　whether　to　outsource　this　business　to　a　retailer,　a　third-party　service,　or　retain　it　exclusively.　In　this　paper,　we　constructed　three　models　to　study　the　decision　mechanism　in　a　closed-loop　supply　chain,　with　different　players　selected　to　collect　the　used　product.　By　comparing　the　three　models,　we　characterized　the　conditions　under　which　the　manufacturer　will　benefit　most,　and　we　then　aimed　to　determine　the　best　choice　for　the　manufacturer.　Our　findings　show　that,　when　the　retailer　and　the　third-party　service　provider　provide　equal　performance　in　collecting　the　used　product,　the　manufacturer　will　give　priority　to　the　third-party　service　provider　if　they　choose　to　outsource　this　business.　If　the　reverse　flows　managed　by　the　retailer　result　in　a　higher　payoff　for　the　manufacturer,　then　the　manufacturer　will　choose　to　outsource　this　business　to　the　retailer　who　will　also　benefit.