If you're looking to add a unique feature like built-in cup holders to your product, you're likely dealing with an ODM (Original Design Manufacturing) request, not a pure OEM (Original Equipment Manufacturing) one. Here's the key distinction. A traditional OEM arrangement typically involves manufacturing a product based on your precise, pre-existing designs and specifications. The factory provides the production capability, but you own the complete blueprint. An ODM model, however, involves the manufacturer contributing significantly to the design and development itself. A built-in cup holder is a specific design integration that alters the product's form and function. Unless you are providing the factory with exact engineering drawings for that cup holder's integration, you are asking them to contribute design expertise to solve a need—"we want a place to hold drinks securely." This design responsibility falls under ODM. The manufacturer will likely propose solutions, materials, and placements, effectively co-developing this new feature. Therefore, requesting a unique, integrated feature like this is primarily an ODM request, highlighting a collaborative development partnership rather than just contract manufacturing.