The project is listed under Rigid-Flex PCB services, which are specialized circuits that combine both rigid and flexible substrates, often used in compact or complex electronic assemblies like wearables or folding devices.
The .rar file serves as the package for the manufacturer to interpret circuit layers, drill holes, and component placement. Technical Review 21182.rar
Ensure the project ID 21182 corresponds to a legitimate design you or a colleague intended to share. The project is listed under Rigid-Flex PCB services,
The PCBWay manufacturing guidelines indicate that their automated systems will use the internal parameters of the files regardless of external selection menus (such as via filling options) unless specifically noted in the engineering instructions. 21182.rar