Pre-shipment Inspection: After products are manufactured and packed for shipment, random sampling inspection of finished goods is performed in accordance with internationally accepted sampling standards. The inspection covers product appearance, dimensions, functions and performance, labels and markings, packaging integrity, and verification of packed quantity. It comprehensively evaluates whether the quality of the whole batch complies with customer requirements, order specifications and relevant standards. As a critical quality gate before shipment, it confirms that mass production goods meet specifications prior to delivery, reducing the risk of customer complaints and returns after arrival.