“…Based on the average unit carbon emissions trading price of April 2020 in Fujian Province of China, let k = 9:1. With reference to the setting of the remaining parameters in [30][31][32], we set c m = 500, τ = 0:12, n = 0:84, δ = 0:8, a = 5000, e = 10, d = 300, ε = 0:3, φ = 50, r = 0:4, μ = 15, b = 10, and β = 0:2; these values ensure that the optimal value is meaningful, and the results are shown in Tables 4-6.…”