Short answer
A 1688 sample can help you assess that unit against your requirements; it does not establish the consistency of a bulk order. Write a specification, agree the inspection and testing scope, and consider a small pilot batch before committing to the full quantity. Compare the agreed checks with the sample and specification, and resolve differences before scaling.
Review the pilot results and unresolved issues before deciding whether to increase the order.
What a sample can help you assess
A sample can help you assess visible finish, dimensions, hardware, packaging and how the item fits your intended use. It also gives you a chance to clarify requirements with the supplier. A photograph or appearance check alone cannot establish material composition, authenticity, safety or functional performance; arrange any specialist testing separately before relying on those properties.
Photograph the sample and record the measurements, variant and order reference. Keep those records alongside the written specification so later checks use the same reference. Sample approval does not replace an agreed acceptance plan for the bulk order.
What a sample cannot prove
- Consistency across hundreds of units, including colour, sizing and seams
- Whether the production line changes tooling or subcontracts part of the run
- Whether the quantity in each carton is accurate
- Whether the supplier can repeat the same lead time under load
- Whether the packaging is suitable for the bulk shipment and its expected handling
- Whether later units use the same materials and construction as the sample
A pilot can reveal some of these differences, but it cannot establish consistency throughout a later batch. Agree the sample selection, inspection method and any specialist testing needed for the actual order.
Write the specification before the bulk order
Write a specification that covers the details relevant to your product: measurements with tolerances, material requirements, colour reference, hardware, assembly, units per carton, packaging, labels and any agreed tests. Attach numbered sample photos so each requirement has a clear reference. Confirm which details can be checked visually and which need measurement or specialist testing.
Ask the supplier to confirm the specification, production quantity and acceptance process in writing. If a requirement or tolerance remains unclear, resolve it before authorising the next stage.
Use a pilot batch to review the specification
Agree a pilot quantity and sampling approach appropriate to the product and your purchasing risk. Compare the selected units with the specification using consistent measurement methods and lighting where relevant. Record how the pilot was selected; results from a few units do not establish the condition of an entire bulk batch.
Record each deviation and compare it with the agreed tolerance. Resolve unacceptable differences with the supplier before authorising the full order. If your requirements change, agree a revised specification in writing before production continues.
Evidence to collect at the warehouse
Before goods arrive, confirm which warehouse checks are available, their scope and any charges. Depending on the agreed service, request carton counts, packed weights, photos of labels or visible damage, and checks of selected contents against the specification. Specify whether you need every unit counted or only a sample checked. Photos and a sample carton cannot establish whole-batch conformity, material composition or functional performance. Keep order and tracking references for any parcels split for forwarding.
Shipping and storage side
Compare consolidation and separate-parcel quotes using the packed weight, dimensions and eligible routes; combining cartons does not guarantee a lower price. For buying-agent orders, CNCartGo's service fee is 6–15% of the product order value. At the first checkout, pay the products, seller-to-warehouse delivery charges and service fee. International freight is confirmed after warehouse receipt and parcel measurements, using the actual or volumetric weight applicable to the selected route, and paid separately before dispatch. Check the route estimate and restrictions for the destination instead of relying on a fixed delivery window. Storage is free for 100 days from the date the order is marked "Received." From day 101 through day 200, storage costs USD 0.10 per parcel per day. The maximum storage period is 200 days; after 200 days, the parcel is treated as automatically destroyed and is unavailable for recovery or shipment. Check the Received date and request shipping in time; a shipping request does not itself confirm dispatch.
Checklist before scaling
- Sample photos, measurements and written approval recorded
- Specification, tolerances and acceptance process agreed in writing
- Pilot results reviewed before committing to the full quantity
- Warehouse inspection scope, sample selection and any charges agreed
- Supplier lead time confirmed for the actual quantity
- Packed-parcel route, costs and declaration details checked
Next step
Submit the 1688 link, specification, intended quantity and destination country through /en/buy/ for a review of the purchase and shipping requirements. Confirm the supplier terms, inspection scope, charges and route eligibility before paying for the next stage.
About the author: Written by the CNCartGo editorial team as a practical guide to documenting sample requirements and reviewing a proposed bulk order.
Last reviewed: September 5, 2026. Supplier lead times, MOQ terms and inspection habits are negotiated per order, so confirm the current terms directly with the supplier you are using.
Related guides
These related guides cover product selection, sample checks and warehouse preparation before a larger order.
- How to Buy Home Storage and Organization Products From China: A Practical Category Guide
- 1688 Sample Order Checks Before Shipping Overseas
- 1688 Supplier Sends a Sample First: How Overseas Buyers Should Inspect It Before Bulk Orders
- Warehouse Inspection vs Seller Confirmation: Which Check Matters More Before Shipping From China?
- How to Buy Car Accessories and Auto Parts from China in 2026
