What Is a Factory Acceptance Test (FAT) and Why You Need One Before Shipping

You’ve negotiated the contract, paid the 30% deposit, and your Chinese supplier just sent you a message:

“Machine is ready. Please arrange balance payment so we can ship.”

Your instinct might be to wire the money, clear customs, and get the machine running. But here’s the problem:

Once that machine leaves the factory, your leverage drops to near zero.

If it arrives damaged, misconfigured, or missing components, you’re stuck negotiating repairs from 8,000 miles away — and your supplier suddenly becomes much harder to reach.

The solution? A Factory Acceptance Test (FAT) — a formal inspection and performance verification conducted at the supplier’s facility before you release final payment.

This guide explains what a FAT is, what it should cover, who should conduct it, and how to structure it into your purchase agreement so you’re protected.

What Is a Factory Acceptance Test (FAT)?

A Factory Acceptance Test is a pre-shipment inspection where you (or your representative) physically verify that the machine:

Matches the agreed specifications
Functions correctly (runs at rated speed, produces acceptable output, meets quality standards)
Includes all accessories, spare parts, and documentation
Is properly packaged for international shipping

The FAT is usually conducted at the supplier’s factory, witnessed by you, your engineer, or a third-party inspector. It’s documented in a FAT report and signed off by both parties.

Key point: Until the FAT is passed, you withhold the 70% balance payment. This gives you leverage to demand corrections before the machine is crated and shipped.

Why You Need a FAT (Especially for Chinese Machinery)

You Catch Problems When They’re Fixable

If the machine has a defect, it’s far easier (and cheaper) to fix it while it’s still in the supplier’s workshop. Once it’s shipped:

You pay for a technician to fly to your facility ($3,000–$10,000)
You wait weeks for replacement parts
Your production schedule is delayed
You’re negotiating from a weak position

A FAT catches issues before they become your problem.

You Verify the Machine Actually Exists

It sounds obvious, but scams happen. Some “suppliers” are just middlemen who don’t own a factory. A FAT forces them to produce a real, working machine — or reveal themselves as frauds before you’ve paid in full.

You Get Documentation and Training

A good FAT includes:

Hands-on training for your operators (or at least a detailed video walkthrough)
Verification that the user manual matches the actual machine
Spare parts list and confirmation that critical spares are included

Without a FAT, you might receive a machine, a generic manual (for a different model), and zero support.

You Hold Leverage Until the End

Payment terms like 30/70 (30% deposit, 70% before shipment) only protect you if you actually inspect before releasing the balance. Otherwise, you’re just paying 100% upfront in two installments.

What Should a FAT Cover?

A comprehensive FAT checks four areas:

Physical Inspection

Verify:

Machine model and serial number match the purchase order
All specified components are present (motors, sensors, control panels, safety guards)
Build quality: welds, paint, alignment, cleanliness
No visible damage, rust, or loose parts

Red flag: Machine looks hastily assembled, with mismatched parts or poor finishing.

Functional Testing

Run the machine through its full operational cycle:

Power-up sequence — does it initialize correctly?
Speed test — does it hit the rated output (e.g., 100 packs/min)?
Quality test — produce sample output and check for defects (seals, cuts, fills, labels)
Safety systems — test emergency stop, interlocks, guards
Control interface — verify HMI (touchscreen) is intuitive and in the correct language

Use actual materials: If it’s a packaging machine, bring real product and film. If it’s a CNC lathe, bring a test piece. Don’t accept a demonstration with “equivalent” materials.

Documentation and Accessories

Confirm you’ll receive:

User manual (in English or your language)
Electrical, pneumatic, and hydraulic schematics
Spare parts list with photos and part numbers
CE Declaration of Conformity (if required)
Warranty certificate
All accessories: tools, spare parts, calibration instruments

Check the manual: Does it match your machine’s control panel and layout? Generic manuals from a different model are useless.

Packaging and Shipping Readiness

Before the machine is crated:

Verify it’s properly protected (foam, shrink wrap, desiccant for moisture)
Check the crate is sturdy (export-grade wood, fumigated if required)
Ensure fragile components (touchscreens, sensors) are separately cushioned
Confirm dimensions and weight match the shipping quote

Why this matters: Poorly packaged machines arrive damaged. Once customs clears it, damage claims are nearly impossible to win.

Who Should Conduct the FAT?

You have three options:

Option A: You (or Your Engineer) Visit in Person

Pros:

You see exactly what you’re getting
You can ask questions and request changes in real time
You build a relationship with the supplier

Cons:

Costs $2,000–$5,000 (flights, hotel, time)
Requires technical knowledge to evaluate the machine

Best for: Orders >$50,000, custom machines, or first-time suppliers.

Option B: Hire a Third-Party Inspector

Companies like SGS, TÜV, AsiaInspection, or freelance engineers can conduct the FAT on your behalf.

Cost: $500–$1,500 depending on machine complexity and location.

Pros:

Professional, objective assessment
Detailed report with photos and measurements
No need to travel

Cons:

Inspector may not know your specific application
You’re not there to make judgment calls

Best for: Standard machines, verified suppliers, or when travel isn’t feasible.

Option C: Remote Video FAT

If budget is tight, insist on a live video walkthrough via Zoom/WhatsApp where you:

Control the camera angle (not a pre-recorded video)
See the machine running at full speed with your materials
Verify serial numbers and included accessories
Ask questions in real time

Cost: Free (but requires trust and good communication)

Pros: Better than nothing

Cons: You miss details (sound, vibration, build quality up close)

Best for: Low-value machines (<$20,000) from suppliers with good references.

How to Structure a FAT into Your Contract

Include these clauses in your purchase agreement:

FAT as a Payment Milestone

“The 70% balance payment will be released only after a successful Factory Acceptance Test. The Buyer (or Buyer’s representative) will conduct the FAT at Supplier’s facility within 10 working days of Supplier’s notification that the machine is ready.”

Define FAT Criteria

“The machine will pass FAT if it meets the following criteria:

Operates at [X] units per minute for 2 consecutive hours
Produces output meeting quality standard [describe or reference spec]
All accessories and spare parts listed in Annex A are present
User manual in [language] is provided and matches the machine”

Remediation Process

“If the machine fails FAT, Supplier will correct deficiencies within [X] days and reschedule FAT. Buyer is not obligated to pay balance until FAT is passed.”

Inspector Access

“Supplier agrees to provide full access to the machine, technical staff, and documentation during FAT. Buyer may bring an independent inspector at Buyer’s expense.”

Real-World Example: What a Failed FAT Saves You

Buyer: Kenyan food packaging company
Machine: Vertical form-fill-seal (VFFS) machine, $38,000

FAT findings:

Machine hit only 65 packs/min (contract specified 80 ppm)
Film tension control was inconsistent, causing wrinkled bags
User manual was for a different model
Missing: heat sealer spare parts

Outcome:

Supplier fixed speed issue (faulty servo tuning)
Adjusted film path
Provided correct manual and spares
Re-tested 1 week later → passed

Cost if they’d shipped without FAT:

$4,000 to fly a technician to Kenya
3 weeks downtime
Potential dispute over who pays for fixes

Cost of FAT: $800 (third-party inspector)

ROI: $3,200 + saved relationship with supplier

Common FAT Mistakes to Avoid

Skipping the FAT Because “We Trust Them”

Trust is good. Verification is better. Even honest suppliers make mistakes.

Conducting FAT Too Late

Don’t schedule the FAT the day before the shipping deadline. Give yourself time to fix issues without pressure.

Accepting a “Desktop FAT” (Photos + Video)

Unless it’s live and interactive, pre-recorded videos can hide problems.

Not Testing With Your Actual Materials

A machine that works perfectly with supplier’s sample film might fail with your thicker, printed film. Bring your materials.

Signing Off Too Quickly

Don’t let the supplier pressure you to “just sign” so they can meet a shipping schedule. If something’s wrong, document it and demand fixes.

FAT Checklist (Print and Bring)

Before FAT:

[ ] Contract specifies FAT criteria and payment terms
[ ] Supplier confirmed machine is ready
[ ] Travel or inspector arranged
[ ] Actual materials (product, film, etc.) shipped to factory

During FAT:

[ ] Serial number matches PO
[ ] All components and accessories present
[ ] Machine powers up correctly
[ ] Achieves rated speed for 2+ hours
[ ] Output quality meets spec
[ ] Safety systems function
[ ] HMI in correct language
[ ] Manual matches machine
[ ] Spare parts verified
[ ] Packaging adequate

After FAT:

[ ] FAT report signed by both parties
[ ] Deficiencies documented (if any)
[ ] Remediation timeline agreed
[ ] Balance payment released (if passed)

Conclusion

A Factory Acceptance Test isn’t optional paperwork — it’s your last line of defense before a machine becomes your problem instead of their problem.

For $500–$1,500 (or a plane ticket), you verify that:

The machine exists and works
It matches what you paid for
You have leverage to demand fixes

If your supplier resists a FAT, that’s a red flag. Confident suppliers welcome inspections.

Need help arranging a FAT in China or structuring your purchase agreement? Contact us — we manage inspections, contract terms, and supplier coordination to ensure your machine arrives as promised.

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