International express delivery has effectively solved international
transaction problems, and people are also concerned about the efficiency of
international express delivery consolidation. The explanatory variable is
China's international express delivery transportation policy, which affects the
total factor productivity of China's aviation consolidation industry. Here, the
quantitative eva1uation of the degree of liberalization of China's cross-border
air transport agreements is adopted, and the arithmetic mean of the degree of
liberalization of all individual cross-border express transportation is used as
the overall indicator of China's international air consolidation policy
openness, represented by ASA. It has been believed that the liberalization of
international air transportation can improve the efficiency of the express
delivery consolidation industry, so the coefficient of this variable should be
positive.

　　Control variables are other factors that affect the total factor
productivity of China's aviation transportation industry. It is necessary to
consider some of the main factors that affect industry efficiency in order to
ensure the accuracy and significance of econometric analysis. Take off flights
every day. This indicator can reflect the operational level of both airlines and
supporting industries such as airports, and this variable was also used in the
second stage of its research on factors affecting efficiency. The coefficient of
this variable is uncertain because if resources, including airports and courier
companies, are fully utilized, the coefficient is positive. If there are idle
resources, especially airport resources, the coefficient can also be negative.
Flight hours per day. This indicator, combined with takeoff flights, can reflect
the length of the route and the impact of route distance on industry efficiency,
represented by FLH.

　　This variable was used in the second stage of the study on factors that
affect efficiency, and they used gear shift hours. Due to the difficulty in
obtaining data on gear shift hours, we will use the daily flight hours here. The
coefficient of this variable may be negative because the longer the flight hours
per day, the longer the idle time of ground resources. Annual average carrying
capacity. The load factor reflects the degree of utilization of a flight's
capacity, expressed as 1of. The higher the loading rate, the higher the output
per unit time, so the coefficient of this variable should be positive. This
variable was used in the second stage of its research on factors that affect
efficiency. Fuel consumption per million tons per kilometer. This indicator
mainly reflects the technological progress of the industry, expressed in full.
Industry technological progress is an important indicator that affects the
improvement of industry efficiency. The overall trend of the industry is the
continuous improvement of technology, reflected in the continuous reduction of
unit energy consumption in fuel consumption. The coefficient of this variable
should be positive.

　　This variable was used in the second stage of the study on factors that
affect efficiency. The proportion of international consolidation volume. This
indicator reflects the degree of internationalization of the industry,
represented by itr. The higher the degree of internationalization, the more
intense the competition is generally faced, which is conducive to improving
efficiency. However, the increase in internationalization is not the result of
active liberalization of international air transportation policies, but may be
the result of demand reversal. The analysis of the revision of China's
cross-border express transportation agreement reveals that capacity adjustment
is the most important, but it is not the principle of revising capacity
determination, but rather increasing capacity to meet market demand.

　　The above introduces the efficiency of international express consolidation
volume, hoping to be helpful to everyone! We provide dedicated air and sea
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