Mechanical Quality Assurance (QA) and Quality Control (QC) are crucial aspects of ensuring the quality and reliability of mechanical systems, components, and products. Here's a breakdown of both: Quality Assurance (QA): QA focuses on the processes and procedures used in the design, development, and manufacturing of mechanical products. The goal is to prevent defects from occurring in the first place. QA involves establishing standards, procedures, and guidelines to ensure that products meet predefined quality criteria. Quality Control (QC): QC involves the inspection, testing, and evaluation of products to ensure they meet the specified quality standards. Unlike QA, which focuses on preventing defects, QC focuses on identifying and correcting defects in finished products.