科技的進步帶給我們在物質上許多的選擇，例如智慧型手機，每一年我們都可以看到更加新穎與具備更先進技術的產品。然而這種技術進步帶來的是產品的快速汰換，這種汰換並非產品的損毀，僅僅是因為消費者想購買新一代的產品。另外一方面，環保意識的抬頭在國際間與消費者也產生了極大的影響，可用舊產品的大量出現、國際組織間的環保規則訂定與消費者對於再製造產品的購買意願提升，都影響了製造商對於再製造的意願。製造商提供再製造產品到市面上，除了可以將原本不會購買產品的消費者吸引之外，亦可以透過這種環保產品展現自身品牌的環境保護目的。
為了吸引環保類型顧客，製造商需要有足夠的數量與一定的品質來穩定提供給這種市場。然而透過販售出去的產品，如何使用、使用多久與多少人願意透過回收渠道送回給製造商，這些都是非常難以掌握的。因此過去的研究嘗試透過將這些不確定性一併考慮後給予決策者一個可行的方向。然而這些不確定性其實可以用租賃方法來解決，出租的一方透過租賃的方式來掌控回收產品數量、品質與時間點這幾項不確定因素。
本研究考慮製造商可以選擇透過販賣、租賃或者並行的策略來銷售產品，並且在租賃情況下加入製造商再製造產品的選擇；另外，顧客在評斷產品的價值後進行購買行動。本研究透過效用理論來建構市場上的消費者需求，進行三種情境下產品均衡定價來和第三方廠商競爭，並分析此三種情境的優劣與當消費者對於產品價值改變時，製造商的策略變化。數值分析結果發現，製造商採用單純銷售時其利潤最大，這點與過去研究不同；而採用混合策略時，雖然利潤略差於單純銷售，但此策略可以壓縮第三方廠商的獲利空間。

In order to satisfy consumers and take advantage of used products in the market, many manufacturers start to remanufacture. But there are a lot of problems when recycling used products. This thesis therefore adds a leasing strategy for manufacturers to reduce the uncertainty of recycled products.

This research models the manufacturer’s three strategies. Model 1 considers the manufacturer using the selling and leasing strategies to launch products in a market, as called mixed strategy. Models 2 & 3 are the degenerated versions of model 1. The manufacturer uses the pure selling strategy in model 2 and the pure leasing strategy in model 3.

The numerical and sensitivity analysis found that when the manufacturer is profit-oriented, the pure selling strategy is the best strategy for the manufacturer. On the other hand, if the manufacturer is market-oriented, the mixed strategy is the optimal strategy.

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