“…As seen from Table 2, the research object of supply chain green technology innovation has been limited to a single firm, such as in [12], [20], [28], [29]; between upstream and downstream enterprises in the supply chain, including one supplier and one manufacturer, such as in [21], [24], 27]; or between one manufacturer and one retailer, such as in [18], 19], [22], [23], [25]. [26] also studied a two-level supply chain with two competing downstream retailers . This paper has built a more complete, more complex, and more practical three-level supply chain.…”