The study examines China's pilot policy for the innovative development of services trade and its impact on elevating manufacturing firms within value chains. The authors utilize this policy as a quasi-natural experiment.

The analysis included manufacturing companies listed on Chinese stock exchanges from 2013o 2023. A double machine learning (DML) model was employed for evaluation; according to the study description, the pilot policy statistically significantly facilitated the advancement of companies along value chains.

The practical implication of the finding is that trade policy in the services sector is viewed not only as a tool for the service sector but also as a factor linked to manufacturing development. However, the available source does not disclose which specific industries, regions, or mechanisms provided the primary contribution.