The Sample Was Perfect, the First Production Units Weren't
A Guide to Pre-Production Meetings (PPM) and First Article Inspection (FAI) at Chinese Factories - Why Production Drifts from Samples, PPM Attendees and Agenda, First Article Checks and Decisions, Options When You Can't Be on Site, Request Wording, Contract Clauses and a Checklist

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A company importing folding aluminum camping tables approved a sample after two rounds of revisions and placed an order for 3,000 units. At pre-shipment inspection, the tabletops came out a shade darker than the approved sample, and the leg locking-pin holes were off by 1.5mm, so the tables were stiff to assemble. The defect rate was 18%.

When they traced the cause, it wasn't that the factory had been careless. The sample and the production units had been made under different conditions from the start. A technician in the development room had fitted the sample together by hand, while mass production ran on a different line with new jigs and aluminum sheet from a different supplier. The line supervisor had never once seen the approved sample. Rework took three weeks, and the peak-season delivery date was lost.

The steps that close this gap are the Pre-Production Meeting (PPM) and First Article Inspection (FAI). This guide covers why samples and production units drift apart, who should attend a PPM and what goes on the agenda, what to check on first articles and how to judge them, what to do when you can't be on site, and the request wording and contract clauses that make it stick.

Approving a sample confirms "the factory can make it this way." Approving the first article confirms "this line is making it this way." If no one bridges that gap, the approved sample ends up sitting in a display case in the factory office.

1. Why Production Units Differ from Samples

A good sample followed by different production units is common. It has less to do with the factory's effort than with how production is structured. Samples and mass production can involve different people, different equipment and different materials.

How to approve samples in stages is covered in Episode 34, and how to organize spec sheets and BOMs in Episode 59. This guide is about the step that checks whether the approved sample actually made it down to the production line.

2. When to Hold a PPM and Who Should Attend

Hold the PPM after raw materials have arrived at the factory and two to five days before production starts. Hold it before materials arrive and you can't check the real materials; hold it after production starts and it's already too late. Chinese factories call it "产前会," and factories with a lot of export experience run one internally even when the buyer doesn't ask.

The most important attendee isn't the salesperson but the line supervisor. The buyer talks to sales, but the line supervisor makes the product. Decisions made in a meeting attended only by sales rarely reach the line.

3. What to Cover in the PPM

One to two hours is enough. Send the agenda in advance, though, and for each item put the physical item or document on the table and check it.

After the meeting, record what was agreed in minutes signed by both sides. Give "differences from the sample stage" its own section in the minutes. If the factory writes "no differences," that goes on record too. For tracking the full production schedule, see Episode 102.

4. First Article Inspection (FAI) - Checking the First Units off the Line

First articles are the first units made on the production line with production jigs and production materials. First article inspection means laying them side by side with the approved sample and drawings and comparing. Mass production only proceeds once the first articles pass.

Quantity depends on the product, but five to ten units is typical; for molded products, check at least one or two from each cavity. Why cavity-to-cavity differences matter is explained in Episode 33.

5. When You Can't Be on Site

You can't fly to the factory for every order. A PPM works fine over video call. Make sure the line supervisor is in the room, and have the factory point the camera at the approved sample and incoming materials so you can check them one by one. For first articles, ask for video of the measurements being taken. For important products, having a first article couriered to you so you can hold it in your hands is the surest option. Air courier usually takes two to four days, so decide in advance whether production waits during that time.

You can also use a local inspection agency or agent. Using third-party inspectors is covered in Episode 47, and how this differs from pre-shipment inspection in Episode 100.

6. Sample PPM and First Article Request Wording

Ask for "a quick check before production" and the factory will send a few photos and call it done. Spell out what to prepare, under what conditions the first articles must be made, and what evidence to send.

In English: "Hold a pre-production meeting with the production, quality and purchasing leads; prepare the approved sample, latest spec sheet and BOM, and material supplier and lot information; first articles must be made on the production line with production jigs and materials (development-room pieces not accepted); submit a full dimensional report, side-by-side comparison photos under the same lighting, and assembly and function test video; do not start mass production before our written approval; notify us in advance of any change and re-confirm first articles." For tips on communicating with factories, see Episode 41.

7. Clauses to Put in Your Contract

A verbal promise to hold a PPM and approve first articles is the first thing dropped in a busy season. Put it in the purchase order or quality agreement and it becomes the factory's obligation.

• A PPM is required before production starts, with named mandatory attendees
• No mass production before written first article approval
• If units produced without approval turn out defective, the factory bears rework and remake costs
• Approved samples (封样) are sealed and signed, one set kept by each side
• Any change to materials, suppliers, processes or jigs requires advance notice and first article re-approval

Setting quality standards by contract is covered in Episode 103, and managing design and material changes during production in Episode 119.

8. Three Real Cases

These are anonymized versions of situations we often see in consultations. Figures are illustrative.

Case 1 - Folding Table Color and Assembly Defects

This is the case from the opening. From the next order on, the company held a PPM, showed the approved sample to the line supervisor in person, and had the aluminum sheet supplier written into the minutes. They approved production only after measuring the pin-hole position on all five first articles, and the same problem did not come back over the next two orders.

Case 2 - Cosmetic Container Pump Output

A company ordering cosmetic containers learned at the PPM that the supplier for the pump component had changed since the sample stage. The factory said it was "the same spec," but measuring the first articles showed 0.2ml less per pump. Production started only after switching back to pumps from the original supplier.

Case 3 - Stitching on Sewn Pouches

A company making sewn pouches found the stitches on the first articles were spaced wider than on the sample: 12 stitches per 3cm on the sample, 9 on the first articles. The line had changed the sewing machine settings to keep up with production speed. The stitch count was written into the work instruction as a number, and new first articles were made.

9. Common Mistakes

• Meeting only with sales and never bringing in the line supervisor
• Holding the PPM before materials arrived, so the real materials were never checked
• Accepting development-room pieces as first articles
• Looking only at first article photos without getting dimensional data
• Letting the factory start mass production without waiting for first article approval
• Leaving the approved sample only at the factory and keeping none on the buyer side

10. PPM and First Article Checklist

Before the PPM

• Sealed the approved sample, one set kept by each side
• Matched revision numbers of the latest spec sheet, drawings and BOM with the factory
• Scheduled the PPM to follow raw material arrival
• Sent the agenda and mandatory attendees in advance

At the PPM

• The line supervisor saw and confirmed the approved sample in person
• Confirmed incoming materials match the sample-stage supplier and spec
• Recorded any process or jig changes from the sample stage in the minutes
• Set dates for first article, in-process and final inspection

First Article Decision

• Confirmed the units were made on the production line with production jigs and materials
• Received full dimensional data (by cavity for molded parts)
• Compared side by side with the approved sample under the same lighting
• Sent the result in writing before approving production

Wrapping Up - Sample Approval Is Only the Start

Approving the sample doesn't settle quality. A sample proves the factory can make the product; it doesn't prove the production line is making it that way. The PPM is where that standard gets handed down to the line, and first article inspection checks that the handoff actually happened.

Together the two steps usually take three to five days. That costs far less than losing weeks to rework after pre-shipment inspection finds defects.

Here's something you can do today. Pull out the production schedule for your next order and check whether there's a "first article check" date on it. If there isn't, you won't find out whether production matches the sample until just before shipment.

StartMade supports you on the ground with drafting PPM agendas and attending the meeting, inspecting first articles at the factory, and sealing and managing approved samples. If you've had a good sample turn into different production units, we can help from your next order.