The roar of injection molding machines creates an industrial prelude in the workshop, and Hanhe's injection molding workshop is performing the "birth magic" of cosmetic vacuum bottles. The granular raw materials undergo high-temperature melting in the barrel, turning into amber colored fluid. With the precise pushing of the screw, they are injected into the customized mold at a constant pressure. In the mold cavity, the fluid spreads along a predetermined trajectory. After 30 seconds of cooling and shaping, the mold slowly opens, and the bottle body with residual temperature is pushed out, with a crystal clear texture shining with delicate luster under the light. The parameters on the operation screen jump in real-time, and the temperature, pressure, and holding time are accurate to two decimal places. Each injection molding machine is like an experienced craftsman, maximizing the characteristics of polymer materials and making the wall thickness of each vacuum bottle uniform like a mirror, laying a solid foundation for subsequent vacuum preservation functions.