Service agencies usually have a wide range of manufacturing technology options, preferably with a full range of services such as injection molding, CNC machining or 3D printing. In addition, these offices often provide online automatic quotes and valuable manufacturability analysis designs. High value service organizations will be able to work with you throughout the design and development process as well as throughout the product‘s lifecycle. Service agencies often have an in-depth understanding of how to take full advantage of their processes and materials.
Quality Control: Consistency is a strong litigation. They usually have better control plans, check reports and processes to ensure repeatability and reliability.
Turnaround time: should be very sensitive, have better results, have the ability to respond immediately to your order.
Volume: different, depending on capacity. A small service organization may have a lot less advantage than an internal store.
Production costs are different, but may be higher than some internal stores. The service organization knows the competitive landscape and price. Prices of large institutions fluctuate less than smaller institutions, and when they need to work, prices tend to fall and raise prices when they are busy.