The release of the mass production will be a major impact to the factory’s internal organization. They must allocate sufficient production lines and workers to complete your project on time. They also must have prepared all printed and packing material to pack the finished goods as they come off the conveyor belt. All materials, components, cabinet parts if any, must be on hand to start the production.
There must be sufficient QC staff available and familiar with your detailed instructions. Workers without QC supervision may not deliver the expected results. I am not going to go into the details, but you know if some preparations were not completed on time the whole project cannot start smoothly.