This service is designed to meet customer-specific needs by combining the characteristics of electronic technical publication data, offering personalized custom processing services that include data migration and historical data access.

The service content includes:
- **Data Migration**: This service is provided in scenarios such as aircraft operator changes, which require the migration of manual data.
- **Historical Data Access**: COMAC typically provides download access to the current valid version of manuals and the previous version. If additional historical versions are needed, this service allows for the download of those versions.

The goal of the service is to fulfill customers' personalized technical publication data requirements. The customer benefits by improving the efficiency of manual data usage and enhancing data consistency.