How do I find manufacturers to send this to?

Start by naming your process, material, and volume, then search the right directories and decide between domestic and overseas. Our guide on how to find a manufacturer walks through where to look and how to build a shortlist, which is the step before this checklist.

Does it matter if it is a factory or a trading company?

Yes. A factory makes your part; a trading company resells another factory's capacity with a margin on top and a communication layer in between. Trading companies are not automatically bad, but you should know which one you are talking to, and price accordingly.

What is a golden sample?

A golden sample is a physical reference part that both you and the supplier sign off on before mass production. Production must match it, and it is the tie-breaker if there is a quality dispute. The supplier keeps it on the production floor.

Do I need a lawyer for the NDA?

A basic mutual non-disclosure agreement is a reasonable starting point and many are available as templates, but this is education, not legal advice. For anything high-stakes, or once real money and tooling are involved, have a professional review your agreements.

Manufacturer Vetting Checklist and RFQ Guide

Updated November 14, 2026

Choosing the wrong manufacturer is one of the most expensive mistakes an inventor can make. Work through this checklist before you pay anyone: what to put in your request for quote, the questions that reveal who can actually build your product, how to handle samples, and how to protect your design. Tick items off and print it to take into your supplier calls.

Red flags: when to walk away

Most bad supplier choices show their signs during the RFQ. Treat any of these as a reason to slow down and dig in, or to move on:

A quote much cheaper than the rest that quietly excludes tooling, testing, or rejects. Missing costs are deferred, not absent.
Suspiciously round numbers ($1.00 per unit, $20,000 tooling). Real costs are not round; ask for the breakdown.
Deflects technical questions. 'Don't worry, we'll handle it' is the most expensive sentence in sourcing.
No references or evidence of similar work, especially for tooled parts.
Refuses an NDA, inspection rights, or a factory visit (yours or a third party's).
No clear sample-approval path, so 'samples' have no agreed definition.
Demands 100% payment upfront.

Where this comes from

This checklist distills established 2026 sourcing and RFQ practice into the steps that matter for a small-product inventor. It is a starting framework, not legal or contractual advice. For the full walkthrough, see how to find a manufacturer and contract manufacturer vs OEM, which explain who owns your design under each kind of arrangement.

Want a vetted shortlist instead of starting from scratch? The idea-to-shelf program teaches sourcing and includes a directory of manufacturers members have worked with.

Frequently asked questions

How do I find manufacturers to send this to?: Start by naming your process, material, and volume, then search the right directories and decide between domestic and overseas. Our guide on how to find a manufacturer walks through where to look and how to build a shortlist, which is the step before this checklist.
Does it matter if it is a factory or a trading company?: Yes. A factory makes your part; a trading company resells another factory's capacity with a margin on top and a communication layer in between. Trading companies are not automatically bad, but you should know which one you are talking to, and price accordingly.
What is a golden sample?: A golden sample is a physical reference part that both you and the supplier sign off on before mass production. Production must match it, and it is the tie-breaker if there is a quality dispute. The supplier keeps it on the production floor.
Do I need a lawyer for the NDA?: A basic mutual non-disclosure agreement is a reasonable starting point and many are available as templates, but this is education, not legal advice. For anything high-stakes, or once real money and tooling are involved, have a professional review your agreements.

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