Product quality inspections can't guarantee 100% perfect quality, because a product's quality comes from its initial design, the inputs used, and the production processes, as well as other factors, too. Rather, inspections will help you reduce risks and find quality issues early enough to make a difference (such as before a production run is completed).
We see 'quality' as a continually improving concept (a robust Quality Assurance Plan can help this happen) and inspections are a part of that.
But to truly guarantee better quality, work needs to be done at an earlier stage with product design (DFQ), reliability testing, and controlling risks in your supply chain. We can help with reliability testing and lab testing, so contact us to discuss these.