in the clean and bright dust-free injection molding workshop, the constant temperature and humidity environment is neat and orderly. Air is circulated through multiple purification processes, with seamless, easy-to-clean floors and walls. Workers operate in sterile uniforms per regulations. Rows of high-speed injection molding machines run precisely: food-grade PP raw materials are melted at high temperature, injected under high pressure and cooled rapidly to shape disposable lunch boxes and plastic products in one step. The assembly line is smooth and efficient; formed lunch boxes are inspected, sorted and conveyed in order. The whole process is dust-free with strict quality control, ensuring production efficiency and compliance with food contact safety standards. The workshop runs quietly with smooth links, showing professionalism and standardization of modern sterile production.