Scale efficiency reflects the gap between actual scale and optimal production scale.
Generally speaking, comprehensive technical efficiency = pure technical efficiency × scale efficiency.
Comprehensive technical efficiency is a comprehensive measure and evaluation of resource allocation ability and resource utilization efficiency of decision-making units.
Pure technical efficiency is the production efficiency influenced by management and technology.
Scale efficiency is the production efficiency affected by enterprise scale factors.
Comprehensive technical efficiency = 1, that is, the input and output of the decision-making unit are comprehensive and effective, that is, the technology and scale are effective.
Pure technical efficiency = 1, which means that under the current technical level, the use of its input resources is efficient, and the fundamental reason for failing to achieve comprehensive efficiency is that its scale is invalid, so the focus of its reform lies in how to better play its scale benefits.