A product development company like Outdesign Co helps inventors, startups and established businesses build prototypes of their new product ideas. We specialize in turning ideas from a napkin sketch to actual physical products and prototypes. If you already have 3D CAD files of your design, then a local 3D printing shop or machine shop will be more suitable depending on the type of product, purpose of prototype and materials used. For products that need minor changes like colors, logos etc added to an existing product, then a manufacturer will be more suitable. Here is a more detailed article on the types of companies that build prototypes of your idea.