Reverse engineering (also known as reverse technology) is a process of product design technology reproduction, that is, reverse analysis and research of a target product to deduce and derive the product's processing flow, organizational structure, functional characteristics and technical specifications, etc. Design elements to create products that are functionally similar, but not exactly the same. It is widely used in new product development, product modification design, product imitation, and quality analysis and testing. It can shorten the product design and development cycle, speed up product upgrading, and reduce the cost and risk of new enterprise development.