Transnational remanufacturing decisions under carbon taxes and tariffs
研究了出口国原始设备制造商在碳税和关税影响下的三种再制造模式，分析了定价和减排决策，发现高碳关税虽增加再制造品销量但不利于减排，而碳税可能间接影响减排投资。
Considering the influence of carbon taxes and tariffs on transnational closed-loop supply chains, this paper establishes three remanufacturing modes of an original equipment manufacturer (OEM) in an exporting country. In one remanufacturing mode, the OEM conducts remanufacturing itself, and in the other two modes, the OEM authorizes a retailer in the importing country to engage in remanufacturing. Next, we analyse the optimal pricing and carbon emissions reduction decisions of the OEM and retailer in the different modes and further study how different levels of carbon tax and tariff combinations impact OEM remanufacturing decisions, the social welfare of importing countries and the environment. The results show the following. (1) When the carbon tariff is high, the optimal sales of remanufactured products increase. However, this does not contribute to the continuation of the product system; thus, it is short sighted for the government to hastily set high carbon tariffs to discourage the import of new products to protect domestic enterprises. (2) Carbon tariffs cannot effectively encourage the OEM to invest in emission reduction because carbon tariffs are passed on to consumers in importing countries through price adjustment. However, carbon tax may be an indirect factor affecting the OEM's willingness to invest in emission reduction. (3) The OEM favours allowing the retailer to remanufacture when the carbon emissions of the remanufactured products are similar to those of new products. Co-investment in emission reduction has the potential to align the profit maximization of the OEM with the social welfare maximization of the importing country. (4) It is not profitable for the importing government to set high carbon tariffs to protect its own enterprises.