Pre-Production Checklist for China Orders: What to Lock Before Bulk Production Starts
Once the sample is approved, do not move directly from:
“Sample looks good” → Deposit paid → Bulk production starts
without first locking the production basis.
Before bulk production starts, confirm and document seven areas:
- Final product definition — model, materials, dimensions, tolerances, finish, components, function;
- Approved reference — final sample version, drawings, artwork, approved deviations;
- Production setup — factory, production site, outsourced processes, subcontractors;
- Packaging and labeling — unit packaging, labels, barcodes, carton markings;
- Commercial execution — quantity, production lead time, milestones, shipment-readiness target;
- Quality controls — inspection basis, tests, defect definitions, inspection timing;
- Change control — which changes require buyer notification, re-approval, re-sampling, or re-testing.
A useful workflow is:
Sample Evaluation → Pre-Production Lock → Bulk Production → Pre-Shipment Inspection
The goal is not to create a legal contract template.
The goal is to make the production reference clear enough that the buyer, supplier, factory, and inspector are working from the same requirements.
How to Use This Checklist
For each item, use one of four statuses:
| Status | Meaning |
|---|---|
| Locked | Final requirement or reference has been confirmed for production |
| Needs confirmation | Information exists but is still unclear, incomplete, or awaiting supplier confirmation |
| Requires re-approval | A material change has occurred since the last approved version |
| Not applicable | The item does not apply to this product or order |
Do not mark an item as locked simply because it appeared in an old quotation, sample message, or chat thread.
Use the final version intended for this production order.
A. Final Product Definition
The first production control is a written definition of what the factory is expected to make.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Product / SKU / model and revision | |
| ☐ | Material type, grade, composition, or approved material reference | |
| ☐ | Components and accessories included | |
| ☐ | Dimensions and tolerances | |
| ☐ | Weight or other measurable limits where relevant | |
| ☐ | Construction / assembly requirements | |
| ☐ | Color, finish, coating, texture, or surface treatment | |
| ☐ | Functional / performance requirements | |
| ☐ | Product-specific test requirements | |
| ☐ | Approved deviations from the original requirement |
Why this matters
A good sample does not replace a written specification.
If the final requirement exists partly in a spreadsheet, partly in WhatsApp, partly in an old drawing, and partly in the physical sample, the production team may not know which version controls.
Create one final production definition and identify its revision.
The SourcingX sample-evaluation guide recommends tying an Approved / Golden Sample to a written specification rather than treating the physical sample as the entire requirement. (How to Evaluate Supplier Samples Before a Bulk Order)
B. Approved Reference
Identify exactly what the supplier should reproduce.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Approved / Golden Sample ID or clear sample reference | |
| ☐ | Date and revision of the approved sample | |
| ☐ | Specification version linked to the sample | |
| ☐ | Final drawings | |
| ☐ | Final artwork files | |
| ☐ | Color / finish reference | |
| ☐ | Approved deviations documented | |
| ☐ | Buyer and supplier are referring to the same final version |
Check whether the sample is production-representative
Ask:
- Was the approved sample made using final materials?
- Was final tooling used?
- Was it made using the intended production process?
- Were temporary or substitute components used?
- Will any part of bulk production differ from the sample process?
If the answer reveals a material difference, do not automatically cancel production.
Record the difference and decide whether it requires a revised sample, testing, or another approval step.
C. Production Setup
Before production begins, identify where and how the order will actually be made.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Primary production-site / factory address | |
| ☐ | Factory / operating entity where relevant | |
| ☐ | Key production processes performed in-house | |
| ☐ | Processes that will be outsourced | |
| ☐ | Known subcontractors / external workshops for critical processes | |
| ☐ | Whether the order will be split across multiple factories or lines | |
| ☐ | Production line or process relevant to the product where important | |
| ☐ | Requirement to notify the buyer before production site or subcontractor changes |
Subcontracting is not automatically a negative signal.
But the production setup should not change invisibly after the buyer has approved a sample or factory.
If production is split across sites, define how each lot will use the same specification and how batches will be traced and inspected.
See Is My Supplier Subcontracting Production? What to Verify When an Order Is Split Across Factories for the deeper workflow.
D. Materials and Components
A sample can be correct while future production uses a different material or component source.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Critical material specification | |
| ☐ | Critical component specification | |
| ☐ | Approved material / component source where source matters | |
| ☐ | Substitution rules | |
| ☐ | Buyer approval required before material / component changes where applicable | |
| ☐ | Relevant material test / compliance evidence identified |
Avoid vague wording such as:
“Use good-quality material.”
Where the material matters, define the requirement in measurable or identifiable terms.
E. Packaging and Labeling
Packaging should be part of the production specification, not a last-minute shipping decision.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Individual product packaging | |
| ☐ | Inner carton / master carton configuration | |
| ☐ | Packaging material and dimensions where relevant | |
| ☐ | Artwork and logo version | |
| ☐ | Product labels | |
| ☐ | Barcodes / SKU labels | |
| ☐ | Care / warning / instruction labels where applicable | |
| ☐ | Carton markings / shipping marks | |
| ☐ | Pack quantity per carton | |
| ☐ | Approved packaging sample or reference where needed |
Spelling, artwork, barcodes, carton marks, and label placement should be checked before mass printing.
A correct product can still create a costly shipment problem if thousands of labels or cartons use the wrong artwork.
F. Quantity, Lead Time, and Production Milestones
Do not record only one final ship date.
Understand the operational schedule behind it.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Final order quantity by SKU / variation | |
| ☐ | When production lead time starts | |
| ☐ | Material-procurement timing where relevant | |
| ☐ | Target production start | |
| ☐ | Target production completion | |
| ☐ | Inspection window | |
| ☐ | Rework / re-inspection time allowance where appropriate | |
| ☐ | Packaging completion target | |
| ☐ | Shipment-readiness target |
Ask:
Is this production schedule based on the supplier’s current production availability?
A quoted lead time should be understood together with current workload, material availability, outsourced processes, QC, and packaging.
See How to Verify a Chinese Supplier’s Production Capacity and Lead-Time Claims Before Placing an Order for the capacity evidence workflow.
G. Quality-Control Basis
Do not wait until the inspector arrives to decide what counts as a defect.
Before production, define what later quality checks will use as the reference.
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Final written specification available to QC / inspector | |
| ☐ | Approved / Golden Sample available as a reference where applicable | |
| ☐ | Drawings and tolerances finalized | |
| ☐ | Functional tests defined | |
| ☐ | Artwork and packaging checks defined | |
| ☐ | Critical / major / minor defect definitions where used | |
| ☐ | Inspection quantity / sampling method defined where appropriate | |
| ☐ | Inspection stage and timing agreed | |
| ☐ | What happens if the result does not meet the agreed criteria is operationally clear |
Do not choose an AQL number by habit
If you use acceptance sampling, the sampling plan and acceptance limits should reflect the product, lot, and quality risk.
ISO 2859-1:2026 defines AQL-indexed sampling schemes for lot-by-lot inspection by attributes. It provides a statistical framework; it does not decide which quality requirements or defect limits are appropriate for your product. (ISO 2859-1:2026)
Where needed, define the plan with your quality team, inspector, or another qualified professional.
H. Inspection Timing
Different inspection stages answer different questions.
| Stage | Useful for |
|---|---|
| Pre-production / initial production check | Materials, components, production setup, and early conformity |
| During production inspection | Detecting process or specification problems before the order is finished |
| Pre-shipment inspection | Checking finished goods, quantity, workmanship, packaging, and defined specifications before shipment |
A PSI is most useful when the inspector already has a clear specification, reference sample, artwork, packaging requirement, and defect criteria.
QIMA describes pre-shipment inspection as an on-site inspection performed when production is substantially complete, using the buyer’s specifications and defined checks as the inspection basis. (QIMA — Pre-Shipment Inspection)
That means the effectiveness of a later inspection depends partly on what you locked before production.
I. Change Control
Define which changes the supplier can make without approval and which changes must come back to the buyer.
Potential controlled changes include:
- material;
- component;
- critical component supplier;
- dimensions or tolerances;
- construction;
- tooling;
- production process;
- finish / color;
- factory / production site;
- subcontractor;
- artwork;
- labels;
- packaging.
Use a simple rule:
Proposed change → Supplier explanation → Impact review → Buyer approval where required → Updated reference / re-sampling / re-testing if needed
| Check | What to lock | Status / evidence |
|---|---|---|
| ☐ | Changes requiring buyer notification are defined | |
| ☐ | Changes requiring written approval are defined | |
| ☐ | Triggers for a revised sample are defined | |
| ☐ | Triggers for re-testing are defined where relevant | |
| ☐ | Triggers for a new or expanded inspection are defined where relevant | |
| ☐ | Final approved change is reflected in the controlled specification |
Change control prevents the common situation where both sides believe the product is “the same” while a material, component, factory, or process has changed.
J. Commercial Execution Information
This checklist is not a contract template, but production operations still depend on a few commercial facts being unambiguous.
| Check | What to confirm | Status / evidence |
|---|---|---|
| ☐ | Order quantity and SKU breakdown | |
| ☐ | Unit price and agreed price basis | |
| ☐ | Tooling / setup charges where applicable | |
| ☐ | Incoterm and named place | |
| ☐ | Payment milestones relevant to production / inspection | |
| ☐ | Which entity is issuing the order / invoice and receiving payment | |
| ☐ | Production and shipment responsibilities relevant to execution |
For legal enforceability, remedies, liability, contract wording, import requirements, or payment protection, obtain appropriate legal, banking, customs, or trade advice.
SourcingX does not replace contract or legal review.
Pre-Production Master Checklist
Before releasing the order into bulk production, confirm:
Product
- Final product / SKU / model is identified.
- Final specification revision is locked.
- Materials and critical components are defined.
- Dimensions and tolerances are defined.
- Color / finish requirements are defined.
- Functional requirements and tests are defined.
- Approved deviations are recorded.
Approved reference
- Approved / Golden Sample is clearly identified where applicable.
- The sample is linked to the final written specification.
- Drawings are final.
- Artwork is final.
- Production-representative differences are understood.
Production setup
- Primary production site is identified.
- Outsourced processes are identified.
- Critical subcontractors / external workshops are known where relevant.
- Multi-factory or split production is disclosed.
- Production-site / subcontractor changes require notification or approval where appropriate.
Packaging and labeling
- Unit packaging is approved.
- Labels and barcodes are final.
- Artwork is final.
- Carton packing and shipping marks are defined.
Execution
- Final quantity by SKU / variation is confirmed.
- Production lead-time start point is clear.
- Production milestones are understood.
- Inspection timing is planned.
- Shipment-readiness target is clear.
Quality control
- Inspector / QC reference documents are ready.
- Defect definitions or acceptance criteria are defined where relevant.
- Sampling / inspection method is defined where appropriate.
- Functional tests are defined.
- Packaging and labeling checks are included.
- Response to failed or unresolved inspection findings is operationally clear.
Change control
- Material changes requiring approval are defined.
- Component changes requiring approval are defined.
- Factory / subcontractor changes requiring approval are defined.
- Process / tooling changes requiring approval are defined.
- Artwork / packaging changes requiring approval are defined.
- Re-sampling / re-testing / re-inspection triggers are defined where appropriate.
If something is not locked, do not fill the gap with an assumption
Use one of these actions:
| Finding | Next action |
|---|---|
| Information missing | Ask the supplier to provide or confirm it |
| Two versions conflict | Identify which version controls production |
| Supplier proposes a change | Assess impact and approve / reject / request new evidence |
| Sample and written specification conflict | Resolve the discrepancy before production |
| Production site or subcontractor changed | Review the new production setup and determine whether additional verification is needed |
| Inspection requirement unclear | Define the inspection basis before inspection is booked |
The goal is not administrative perfection.
The goal is to prevent an important production decision from being made implicitly by the supplier because the buyer never defined it.
How SourcingX Fits Into the Pre-Production Stage
SourcingX can help buyers organize supplier information, compare available signals, identify inconsistencies, and decide what still requires verification before increasing an order commitment.
For example, it may help buyers review available information related to:
- supplier legal identity;
- factory relationship;
- public factory and business information;
- historical trade activity;
- inconsistencies between supplier claims and available sources.
But SourcingX does not replace:
- product engineering;
- laboratory testing;
- factory audits;
- physical quality inspection;
- legal or contract review;
- import-country compliance review.
The operational pre-production package should be built from the buyer’s actual product, order, supplier, and quality requirements.
Bottom Line
Sample approval should not be the final step before bulk production.
Use it as the starting point for a controlled production package:
Final Specification → Approved / Golden Sample → Production Setup → Packaging → Production Schedule → QC / Inspection Basis → Change Control
Then, when bulk production begins, everyone has the same reference.
And when pre-shipment inspection occurs, the inspector is not being asked to decide what “good quality” means after the goods are already made.