Find Vetted Manufacturers.Before the RFQ.
Browse verified supplier profiles by capability, certification and region. No account needed to start. Every shop is screened before it shows up in search.
Free to search, free to send RFIs. No seat limits.
What Are You Sourcing?
Pick a process to see vetted suppliers who run it today. Profiles show who they are and what they do, so you can shortlist before you ever send an RFI.
CNC Machining
Precision machine shops for milled and turned parts, prototypes through production.
View suppliersInjection Molding
Molders for plastic parts, from bridge tooling and low volume runs to full production.
View suppliersContract Manufacturing
Build partners for full assemblies and programs, including regulated and high-mix work.
View suppliersMetal Fabrication
Fabricators for sheet metal, welded assemblies and formed tube.
View suppliersCasting & Extrusion
Foundries and extruders for near-net-shape parts and custom profiles.
View suppliersAutomotive Parts
Tier 1 and Tier 2 suppliers for machined, stamped and molded automotive components.
View suppliersFrom Search to Shortlist in Three Steps.
Start looking right now. Create a free account only when you find suppliers worth a closer look.
Browse Public Profiles
Search vetted suppliers by capability, certification and region. See who fits before you commit any time.
Unlock Full Profiles
Sign up free to see complete supplier pages: equipment, capacity, certification details and contact options.
Send a Structured RFI
Reach out to the suppliers you choose with one clear RFI. Confirm fit first, then move to the RFQ.
See Enough to Shortlist. Sign Up to See Everything.
Public profiles give you a fast read on fit. A free buyer account opens the full picture.
A Quick Read on Fit
Enough to know if a supplier belongs on your list.
- Core capabilities and processes
- Region and industries served
- Verified supplier badge
- Equipment, capacity and certification details
- Messaging and RFIs
The Whole Picture
Everything you need to qualify faster, at no cost.
- Complete supplier pages and data
- Equipment, capacity and certifications (ISO, IATF, AS9100D, NADCAP)
- Send structured RFIs and message suppliers directly
- Metal price, labor and energy indexes
- No seat limits, no fees, no commission
Every Supplier Is Screened Before You See Them.
No pay-to-list directory, no self-reported claims taken at face value. Our team reviews each shop before its profile goes live.
Our ISO-based screening gives you a head start. It complements your own supplier qualification process, so your team starts further along, not from scratch.
Certifications Confirmed
Quality system credentials checked and cross-referenced, not just claimed.
Capability & Capacity Checked
Equipment, processes and real production scale reviewed against what the shop says it runs.
Business Legitimacy Verified
A real company with a real track record, ready to work with.
Built for Industrial Buyers.
Procurement and engineering teams use TandemOne to find new suppliers, qualify second sources and reshore production.
Automotive
Machining, stamping, molding and finishing.
Medical Device
Precision parts, molding and contract builds.
Electronics
Contract manufacturing and assembly.
Aerospace
5-axis machining and NADCAP processes.
Industrial
Fabrication, casting and high-mix work.
I feel very confident about working with suppliers on TandemOne, based on their pre-vetting process. It removes the uncertainty that typically slows things down.
Xintianjian Tech · Manufacturing Partner
Before You Start Searching.
Do I need an account to browse suppliers?
No. Public supplier profiles are open to anyone. Create a free buyer account when you want full supplier pages, details and the ability to send RFIs.
Is it really free for buyers?
Yes. Searching, viewing full profiles, sending RFIs and messaging suppliers cost buyers nothing. There are no seat limits.
How is this different from a supplier directory?
Most directories list anyone who signs up. On TandemOne, every supplier goes through our vetting process before their profile is searchable, so you start with confirmed capability and credentials.
Are you a broker or middleman?
No. We verify suppliers and then step aside. You deal with suppliers directly, own the relationship and we never take a cut of the deal.
What is an RFI, and why send one before an RFQ?
An RFI is a structured request for information covering capability, capacity and fit. It lets you confirm a real match before asking for pricing, so the RFQs you do send go to the right shops.
Your Next Supplier Is Already Here.
Browse vetted supplier profiles now. Create a free buyer account when you're ready to see everything.