By knowing what your manufacturing processes do and how they work, you'll better understand the types of defects that can occur during manufacturing, where the defects occur, and thus where to inspect for them. And you'll discover how defects affect the rest of the manufacturing line. For example, manufacturing people will remove defective PCBs from a manufacturing line right away. There's no sense in adding expensive components to a PCB that contains defects. Clearly specify what you want to inspect for.
Human inspectors can make subjective decisions, but computers require quantitative information.
You must supply an integrator with complete engineering drawings of the product you want to inspect. And the information must clearly describe the types of defects to inspect for and how you measure defects. Be ready to furnish samples of good products and bad products, as well as samples of marginally good products and marginally bad products. These latter two variations help the integrator determine the limits of the good and bad products that pass through the system. Ensure you specify realistic quality tolerances and values.