What is the primary product line for Rapid Prototyping Services?

Rapid prototyping is a process where a working model or prototype is developed for the purpose of testing the various product features like design, ideas, features, functionality, performance, and output. This process of development of the working model is quite quick. I had taken help of rapid prototyping service of Iannone3D, which is a New Jersey-based Rapid Prototyping and 3D Printing Service Bureau. Thanks.