Quality Assurance is really important in manufacturing because it helps prevent mistakes and makes sure products are safe before reaching people. One way to do this is by having clear procedures and training workers so everyone knows how to follow safety and quality rules. Taking care of machines with regular maintenance is also important because broken equipment can cause defects or even accidents. QA can also be improved by checking risks during production and fixing problems early before they get bigger. For example, some medical devices like pacemakers and insulin pumps have been recalled in the past because of software issues or battery failures. These problems happened because certain risks were not caught on time, but stronger QA with better testing and design control could have helped prevent them. Overall, I think focusing on training, preventive maintenance, and risk management makes a big difference for both product quality and patient safety.