Prototyping is the process of creating a prototype, which is a preliminary model or sample of a product used to test and refine its design, functionality, or concept before full-scale production. It involves building tangible representations of ideas to evaluate performance, identify issues, and gather feedback. Prototyping can range from simple mock-ups to complex, functional models and is often iterative, with multiple versions developed to improve the final product. Companies like Shenzhen Alu Rapid Prototype Precision Co., Ltd. use techniques such as CNC machining, 3D printing, and injection molding to facilitate rapid prototyping for industries like automotive and medical.