Wiki | RFQ Preparation | Updated 2026-06-16

What Should Be Included in a Custom Product Specification Sheet for Chinese Suppliers?

Buyer Decision Summary

A custom product specification sheet for Chinese suppliers should include product description, dimensions, materials, colors, logo method, artwork files, packaging, quantity, tolerance, quality checkpoints, sample requirements, destination market, delivery date, and shipping assumptions. The sheet should become the single reference for quote, sample, production, inspection, and reorder communication.

Product Identity and Use Case

The specification sheet should start with product name, use case, target customer, destination market, and reference photos or sample notes. This helps the supplier understand whether the product is a promotional giveaway, retail item, event item, private label product, or functional component.

Use case matters because it affects material, packaging, quality level, and compliance expectations. A trade show giveaway and a retail private label product may look similar but require different production standards.

Size, Material, Color, and Construction

Include dimensions, weight, material grade, thickness, fabric composition, plastic type, metal finish, coating, stitching, hardware, accessories, and any tolerance that matters. If exact tolerances are not known, buyers can ask the supplier to propose normal production tolerances.

Color should be defined with Pantone, physical sample, swatch, or approved sample reference when brand color matters. Screen colors and phone photos should not be the only production reference.

Logo, Artwork, and Decoration Method

The sheet should state logo file name, file format, logo size, print position, decoration method, color count, and whether the supplier should provide digital proof or physical sample. It should also show which artwork version is final.

Decoration methods can change cost and lead time. Screen printing, embroidery, heat transfer, laser engraving, UV printing, pad printing, woven labels, and debossing each have different constraints. The specification sheet should name the chosen method or ask the supplier to quote options.

Packaging and Label Requirements

Packaging fields should include individual packing, retail box, gift box, polybag, insert card, barcode, care label, hang tag, warning label, carton quantity, carton mark, and pallet or warehouse requirements. If packaging is not final, the buyer should still state the intended sales channel.

For private label, Amazon, retail, or promotional campaign orders, packaging is part of the deliverable. The specification sheet should prevent the supplier from treating packaging as a late-stage extra.

Sample, QC, and Inspection Rules

The sheet should explain what the sample must prove. It may need to confirm material, color, logo, packaging, function, assembly, or all of these. Buyers should also state whether a golden sample will be kept for production comparison.

Quality fields should include critical checkpoints, acceptable tolerance, defect categories, inspection timing, photo requirements, and whether third-party inspection is allowed. These rules make it easier to decide whether goods can ship.

Quantity, Timeline, and Shipping Assumptions

The specification sheet should include target quantity, quantity tiers, expected order date, required sample date, target shipment date, destination country, and preferred shipping term. Suppliers can quote more accurately when production and delivery timing are visible.

If the order is tied to a campaign, event, retail launch, or seasonal deadline, that date should be marked clearly. A supplier may accept an order that is technically possible but risky if the deadline is not visible from the beginning.

Buyer FAQ

Is a specification sheet required for every custom product?

It is strongly recommended. Even a simple custom product can have material, logo, packaging, quantity, and delivery assumptions that affect price and quality.

Can a specification sheet include open questions?

Yes. It is better to mark open questions clearly than to leave blanks that suppliers may fill with their own assumptions.

Who should own the final specification sheet?

The buyer should keep the final approved version and share it with the supplier as the reference for quote, sample, production, inspection, and reorder.

What file formats should be attached to a specification sheet?

Useful attachments include vector artwork, packaging dielines, product drawings, reference photos, color references, barcode files, label files, and approved sample photos.

Turn This Into a Factory-Ready Quote

Share your product idea, quantity range, target market, artwork, packaging needs, and expected delivery window. CustomInChina.com can help organize the sourcing brief before supplier quotation.

Send your custom product brief

Updated 2026-06-16. This guide is for buyer education and sourcing preparation. Final specifications, compliance scope, inspection standards, and shipping terms should be confirmed against the actual product and destination market.

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