Phouphet Kyophilavong: This paper tries to answer four questions: (1) Can carbon capture, utilization, and storage (CCUS) technology innovation show a positive promotion effect on green total factor productivity (GTFP)? (2) Will the nexus between CCUS technology innovation and GTFP be moderated by other factors? (3) If the positive impact of CCUS technology innovation on GTFP exists, what are the impact mechanisms? (4) Will their relationship always be linear? Or does CCUS technology innovation has asymmetric impacts on GTFP.

In general, this paper has contributed to the literature, asked interesting questions, and provides exciting findings. However, there are some questions and suggestions below.

First, regarding the GTFP calculation, the input variables are labor, investment, and energy factors, represented by the year-end number of employees, the stock of fixed assets, and the total energy consumption, respectively. The perpetual inventory technique is used to calculate the fixed assets, and 2006 is used...

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