One manufacturing partner from prototype to production — under NDA, with free design-for-manufacturing review and full inspection documentation. Your design stays yours.
The two terms get used loosely, so it helps to be precise. The difference decides how much engineering work sits with us versus you:
| OEM (build-to-print) | ODM (design + build) | |
|---|---|---|
| You bring | A finished drawing or CAD file | A requirement, concept, sample, or sketch |
| We add | Manufacturing + QC to your spec | Engineering, material & tolerance design, then manufacturing |
| Best when | Your design is locked | You need the part developed, not just made |
| Design ownership | Yours | Yours — we assign all rights to you |
EKINSUN runs both tracks daily. If you don't even have a drawing, our no-CAD ordering and reverse engineering services feed straight into an ODM program.
The value of a single partner is consistency: the CNC program, fixtures, and inspection plan written at the prototype stage carry forward unchanged, so part 1,000 matches part 1.
Prove form, fit and function. DFM feedback applied before tooling decisions.
Validate the process at small batch. First Article Inspection signs off the spec.
Repeatable batches with locked program and inspection plan. Forecast-based scheduling.
Where it lowers cost, suitable parts move to die casting or injection molding — same QC owner.
For the small-quantity end of this path, see low-MOQ custom parts and our low-volume production capability.
Sharing a design with an overseas factory is the number-one worry for procurement teams. We address it in writing: a mutual NDA before disclosure, no reuse or sub-branding of your design, customer-reserved tooling, and a clear paper trail. First time importing? Read how we protect your design when ordering from China.
We are ISO 9001 certified, and quality scales with the program. Typical documentation by stage:
| Stage | Standard docs | On request |
|---|---|---|
| Prototype | Dimensional report | Material cert |
| Pilot | Dimensional report + FAI | RoHS / REACH declaration |
| Production | Batch inspection report | PPAP package, CoC, SPC data |
Tight-tolerance parts are verified on a CMM — see tolerance & inspection.
Automotive and motorsport, industrial equipment, robotics and automation, marine, energy, and lab/scientific instruments. We are a custom-parts manufacturer, not a catalog supplier — if it can be machined, cast, or molded, it fits our scope.
OEM means you supply the design and we build exactly to it. ODM means you bring a requirement or concept and we engineer the part — materials, tolerances, geometry — then manufacture it. We do both, and you own the design in either case.
Yes — a mutual NDA before any drawing or sample is shared. We never reuse, resell, or sub-brand a customer's design, and your tooling is reserved for your orders only.
Yes. A typical path is 1–5 prototypes, a 20–100 piece pilot, then production batches, with the same program and inspection plan carried forward. High-volume parts can transfer to casting or molding.
Dimensional inspection reports as standard; FAI, material certificates, RoHS/REACH declarations, and PPAP-level documentation on request for production parts.
Tell us your part and target volumes. NDA available before you share files. Engineers reply within 24 hours.
NDA on request · Files kept confidential