Production process refers to the method and process in which workers use production tools to continuously process various raw materials and semi-finished products in a certain order through certain equipment, and finally make them into finished products. Principle: Advanced technology and reasonable economy. As factors such as equipment production capacity, precision and workers’ proficiency in different factories are very different, different factories may make different processes for the same product. Even the same factory may make different processes in different periods. It can be seen that as far as a product is concerned, the production process is uncertain and not unique.