The Real Risk Isn't China — It's the Broker
Most bad experiences "ordering from China" aren't about Chinese manufacturing quality, which at the top end is world-class. They come from dealing with a middleman who quietly resells your job to whichever unknown shop is cheapest that week. You never know who actually cut your parts, so quality swings wildly and accountability vanishes.
The whole game of vetting is therefore one question: am I talking to the people who will actually make my part? Everything below is a way to answer it.
The Vetting Checklist
| Check | Green flag | Red flag |
|---|---|---|
| Certification | Shares ISO 9001 (and ISO 13485 for medical) with numbers/dates | "Yes we are certified" with nothing to show |
| Engineering reply | A named engineer answers technical questions specifically | Only sales replies; dodges DFM questions |
| The workshop | Photos/video of their own machines, or a video call | Stock photos; won't show the floor |
| Sampling | Offers a first-article sample before bulk | Pushes straight to a large paid order |
| Inspection | Provides a dimensional/CMM report | "Trust us, it's fine" |
| IP / NDA | Signs an NDA; deals factory-direct | Anonymous trading account; vague on reuse |
| Payment | Staged terms, traceable channel | 100% up front to a personal account |
Questions That Separate Makers From Brokers
- "Which machines will run this part, and what tolerance can you hold?" — a maker answers in specifics.
- "Can you do a video call from the workshop?" — a maker says yes.
- "Will you sign an NDA and run a first-article sample?" — a maker agrees readily.
- "Can you send a CMM/inspection report with the sample?" — a maker has the equipment.
Where EKINSUN Stands on This
We're a manufacturer, not a trading desk — so we pass our own checklist. We hold ISO 9001:2015 and ISO 13485:2016 and share both on request; you deal directly with our engineers; we run our own floor of 30+ four-axis and 5 five-axis CNC machines plus an injection-molding workshop; we offer a first-article sample before bulk, provide inspection data, and sign an NDA before you share anything. See more in our company & certifications and our guide to ordering from China for the first time.
One practical move beats every promise: ask for a paid first-article sample with an inspection report. It proves the shop's real capability, their honesty about tolerances, and that you're dealing with the maker — all at once.
Frequently Asked Questions
Verifiable ISO 9001, named engineers who answer technical questions, real workshop photos or a video call, and willingness to sample before bulk. A broker reselling your job usually dodges all four.
Yes. A first-article sample verifies dimensions, finish and material before you commit to volume. Any shop refusing a reasonable sample is a red flag.
Sign an NDA before sharing files, deal factory-direct, keep your most sensitive know-how separate, and confirm no reuse. We sign an NDA on request and never reuse customer designs.
ISO 9001:2015 as a baseline; ISO 13485 for medical/regulated parts. Ask for the certificate and dates. EKINSUN holds ISO 9001:2015 and ISO 13485:2016.
Vet Us First
Ask for our ISO certificates, a video call, or a first-article sample. Engineers reply within 24 hours.
ISO 9001 & 13485 · NDA on request · Files confidential