Entering the cosmetics packaging vacuum bottle production workshop of Hanhe, the clean air is filled with the rigorous atmosphere of precision manufacturing. The fully automated production line is like a smooth silver chain, slowly feeding transparent preforms into the forming area. The robotic arm accurately grasps and flips them, and each action undergoes millions of calibrations. The blue indicator light in the vacuum filling area flashes regularly, and the bottle body completes the final sealing and shaping in a negative pressure environment, ensuring that every inch of curvature meets the gentle needs of skin contact. At the quality inspection station at the end of the workshop, the quality inspector is using micrometer level instruments to measure the flatness of the bottle mouth, observing through a magnifying glass whether there are any impurities left on the inner wall - here, a 0.1 millimeter error means starting over, because we know that this small vacuum bottle carries the freshness and peace of mind of beauty products.