Writing a Product Spec Sheet for a Chinese Factory

Send ten Chinese factories a photo of a chair and the words "please quote best price" and you will get ten numbers spread across a range that looks like a pricing scandal. It usually is not. Each supplier quietly filled in the blanks with its own defaults: a thinner board, a lower-density foam, a different fabric, a domestic carton instead of an export one, no test report, no label, and an incoterm nobody specified. The quotes are not comparable because the products are not the same. A product specification sheet is the document that makes them comparable — and, later, the document that makes a pre-shipment inspection possible at all. This guide sets out the fields that belong in one, the wording that closes the common escape hatches, a request-for-quotation email you can copy, and how to carry the same specification through the sample, the purchase order and the inspection before the balance is paid.

Why five factories quote five different prices

A quotation is a factory's answer to a question. If the question is thin, the answer contains assumptions, and those assumptions almost always run in the factory's favour — not out of bad faith, but because a salesperson answering hundreds of enquiries a week will default to whatever is cheapest and fastest to produce. Three gaps do most of the damage.

Materials are underspecified. "Solid wood" can mean oak, rubberwood, pine or a finger-jointed composite. "PU leather" covers a wide range of coating weights and backings. "High-density foam" is a marketing phrase until a density in kg/m³ is written down. A 15 mm board and an 18 mm board look identical in a photo and differ materially in cost, weight and durability.

The scope of the price is undefined. One supplier quotes ex-works with a domestic carton, another quotes FOB with export packaging and a fumigated pallet, a third quietly includes a tooling or sample fee that will disappear on repeat orders. Without an incoterm, a currency and a packaging standard on the sheet, you are comparing a product price to a product-plus-service price. The mechanics behind those terms are set out in FOB vs EXW vs DDP, and the effect on the final number is what the landed cost calculator is for.

Nobody has said who is being quoted. A factory, a trading company and a 1688 storefront can all sell the same chair at different margins with different abilities to customise, certify and take responsibility for a defect. Before comparing numbers, confirm what kind of entity you are talking to — the licence check, live video walkthrough and paid-sample sequence in how to verify a Chinese supplier takes about two weeks on a first order and is cheaper than resolving it after a container ships.

There is a fourth, less innocent cause: a deliberately low quote used to win a deposit, with the specification "adjusted" during production. That pattern, and the bank-detail changes that often accompany it, is covered in China sourcing scams. A tight spec sheet is the simplest defence, because it removes the ambiguity that the switch depends on.

The twelve fields a spec sheet must contain

A usable specification fits on one or two pages plus photographs. It is written in plain English, uses metric units, and states a value or a standard for every field rather than an adjective. Where a value genuinely cannot be fixed yet, write "to be agreed before sample approval" instead of leaving the line out — an explicit open item is visible, a missing one is not.

Field	What to write	What happens if it is missing
1. Product identity	Your model code, product name, reference photo with dimensions marked, and revision/date of the sheet	Suppliers quote against different versions of the same item; old photos circulate long after a change
2. Dimensions and tolerances	W × D × H in mm, seat height, packed size, and an explicit ± tolerance per dimension	Furniture that does not fit the room, the carton or the container plan
3. Materials by component	A line for each part: frame species and grade, board type and thickness, foam density, fabric composition and gsm, metal gauge and finish	The single largest source of price variation and of silent downgrades
4. Colour and surface	Referenced colour standard (for example a RAL or Pantone code), gloss level, and whether a physical approved swatch governs	"Same as photo" produces batch-to-batch shade drift
5. Hardware and construction	Fastener type and grade, joint method, glue class, number and position of support parts, load rating where relevant	Wobbly or unsafe assemblies that still look right in a photo
6. Labelling and markings	Content and position of the permanent label, carton marks, country of origin, and any destination-required warnings	Shipments refused or relabelled at the border, at your cost
7. Packaging	Inner protection, carton ply and burst strength, drop-test expectation, units per carton, palletisation, and packed CBM	Damage claims, and a freight bill far above the one you budgeted
8. Quantity and MOQ	Target order quantity, price-break quantities you want quoted, and any colour or size split	A unit price quoted at a volume you will never order
9. Testing and certificates	Which standard, which component, which lab, report date, and whether the report must name the exact specification	A generic certificate that does not cover the goods actually shipped
10. Acceptance standard	AQL level, defect classification (critical/major/minor), and measurable limits such as colour deviation or wobble	No objective basis for a pre-shipment inspection or a claim
11. Commercial terms	Currency, incoterm and named port, validity of the quote, sample and tooling costs, payment milestones	"Price" changes after the deposit, or excludes costs you assumed were included
12. Lead time and documents	Sample lead time, production lead time from deposit, and the document pack due before balance payment	No leverage when production slips, and no paperwork for customs

Fields 2, 3, 7 and 10 are the ones most often skipped and the ones that decide both quality and cost. For category-specific context on what furniture factories in Guangdong typically quote and where MOQs bite, see sourcing furniture from China.

The RFQ email: a template you can copy

Send the specification as an attached PDF, not as text in the chat window. Attachments carry a revision and a date; chat messages get scrolled away and rewritten. Keep the email short and make the supplier confirm the sheet rather than merely acknowledge receipt.

A workable structure:

• Subject: RFQ – [your model code] – [quantity] units – quote due [date]
• Attachment: specification sheet PDF, revision number and date in the filename
• One-line scope: "Please quote per the attached spec, FOB [port], USD, for [quantity] units and for [second quantity] units."
• Five required answers: confirm you can meet every line of the spec; list any line you cannot meet and your proposed alternative; state unit price and what it includes; state sample cost, sample lead time and production lead time; state MOQ and payment terms.
• Evidence request: business licence name, one recent test report matching the materials, and photos of the actual production line for this category.
• Process note: "Any deviation from the attached specification must be listed in writing before we place a sample order."

The second question is the useful one. A supplier who answers "yes, all OK" to everything without a single clarifying question has often not read the sheet. A supplier who comes back with three specific questions about foam density, carton ply and label position is showing you the exact places where your brief still has gaps. That exchange is worth more than the unit price at this stage.

If you are sourcing through a domestic platform, the same sheet applies; the extra friction is registration, Mandarin, RMB settlement and domestic-only shipping, all covered in how to buy from 1688. A written specification is even more important there, because there is no cross-border dispute process to fall back on.

Tolerances, "or equivalent" and the words that void a quote

Specifications get diluted by small phrases. Watch for these in the quotation, the proforma invoice and the factory's confirmation email — the wording that appears there overrides the adjectives in your enquiry.

• "Or equivalent" / "or similar material". This converts a fixed material into a factory option. Either delete it or define equivalence: same or higher density, same or greater thickness, same test standard, with written approval before substitution.
• "As per sample" with no sample ID. Name the approved sample, give it a date and a signed tag, and state that it is the reference for materials and finish. Otherwise whichever sample happens to be on the desk becomes the reference.
• "Approximately" on dimensions. Replace with a numeric tolerance. On furniture, ±3–5 mm on assembled dimensions is a common working range; whatever you choose, write it down and make it measurable during inspection.
• "Standard export packing". Standard for whom? State carton ply, corner protection, foam or EPE thickness, drop-test expectation, and units per carton.
• Certificates without a scope. A test report for "wooden furniture" does not prove that the foam, fabric and coating on your model were tested. Ask which components the report covers and whether the report names your specification.

Then there is the commercial wording. Ask for the quotation to state that the price holds for a defined period, that the incoterm is named, and that the bank beneficiary matches the legal name on the business licence. The last one is a fraud control rather than a specification issue, and it belongs in the same document because both are checked before money moves; the milestone structures (30/70, 30/40/30) and the reasoning behind them are in how to pay a Chinese supplier safely.

Packaging: where furniture margins quietly disappear

Furniture is a volumetric product. Freight is charged on the space the cartons occupy, so a packaging decision made on the specification sheet can change the landed cost more than a small movement in unit price. A chair that ships assembled may cost less to pack and more to freight than the same chair knocked down; a thicker carton raises the unit cost slightly and can remove an entire damage allowance.

Put three numbers on the sheet: carton dimensions, units per carton, and packed CBM for the whole order. From those, ask the supplier to state how many cartons fit a 20GP, 40GP or 40HQ. This is the input that lets you model freight before you commit — the landed cost calculator takes product value, destination and shipping mode and returns the full breakdown. The broader cost stack, including duties and destination charges, is broken down in the real cost of importing from China.

Also specify the damage test you care about. For a first shipment, an independent pre-shipment inspection that includes a carton drop check and an assembly check on randomly selected units is cheap relative to a claim on a container of scratched veneer. Write the acceptance criteria into field 10 so the inspector has something to measure against rather than a general impression of quality.

Compliance inputs by destination

Your specification sheet is also where compliance obligations enter the product, because most of them cannot be fixed after production. Add a short "destination requirements" block that names the market and lists the tests, labels and documents the factory must support.

For the United States, that can mean composite wood formaldehyde limits with accompanying labelling, flammability requirements for upholstered items, and timber declarations for wooden products. For the United Kingdom, duty on most finished furniture codes is 0%, but the importer is the first supplier under fire-safety rules and the permanent label has to carry the importer's details. For the EU, an EU-established responsible person and packaging obligations apply. The detail, the code numbers and the current effective dates are set out in importing furniture to the US and importing furniture to the UK respectively; put the applicable line items on your sheet rather than a vague "must comply with local regulations".

Two practical points. First, ask for the test report before the deposit, not at shipment — a report that arrives with the container is a report you cannot act on. Second, make the report cover the exact materials in field 3. If production later substitutes a fabric or a foam, the report no longer describes the goods, which is precisely why the substitution clause in the previous section matters.

From spec sheet to approved golden sample

A specification sheet describes a product; a sample proves the factory can build it. Treat the two as a sequence, not alternatives. Pay for the sample — a paid production sample made on the real line is far more informative than a hand-finished free one — and order two identical units if you can, so one can be disassembled for material checks while the other stays intact as a visual reference.

When the sample passes, turn it into a golden sample: tag it with the model code, the specification revision, the approval date and a signature or stamp from both sides; photograph the tag, the joints, the label and the packaging; and state in writing that mass production must match it. Keep one unit with the factory and one with you or your inspector. This single step removes most of the "but the sample was different" arguments that surface after a container arrives.

The verification checks that belong around this step — licence, live video walkthrough, two labelled samples compared physically — are in the verification checklist. If you are working through an agent, the spec sheet, the sample chase and the approval record are part of the job you are paying for; the full scope and the fee models are described in what a sourcing agent does.

Making the spec enforceable in the PO and inspection

A specification only has force if it is referenced in the documents that carry the money. Three links in the chain:

1. Purchase order / proforma invoice. Attach the spec sheet by revision number and state that it forms part of the contract. Repeat the critical fields (materials, dimensions, packaging, label content, quantity, incoterm, lead time) in the PO body so they cannot be separated from the order.
2. Payment milestones. Structure the balance so it is released against evidence, not against a shipping date. A common pattern is a deposit to start production and the balance after a passing pre-shipment inspection and the document pack; see payment structures for the variants and their trade-offs.
3. Pre-shipment inspection. Give the inspector the spec sheet, the golden sample reference and field 10's acceptance standard. Ask for measurements, not adjectives: dimension readings, material checks against the sample, carton drop result, label photo, and defect counts by classification.

Also write down what happens when the inspection fails: who pays for rework, who pays for re-inspection, and what the remedy is if the deviation cannot be fixed. Agreeing this while everyone is still optimistic is much easier than negotiating it with a finished container sitting on the factory floor.

Worked example: one dining chair

Below is an abbreviated illustration of how the fields look once filled in. The values are an example of format and level of detail, not a price benchmark or a recommendation for any particular material — use your own target market's requirements and your own test standards.

Field	Example entry
Product identity	Model DC-104 dining chair, spec rev 02, dated 11 Nov 2026, reference photo with dimensions marked
Dimensions	W 480 × D 520 × H 820 mm, seat height 450 mm, tolerance ±3 mm on assembled dimensions
Frame	Solid rubberwood, kiln-dried, moisture content 8–12%, leg section 38 × 38 mm
Seat	18 mm plywood base, foam density 30 kg/m³, 30 mm thickness
Upholstery	100% polyester, 320 gsm, colour per approved physical swatch SW-07, no substitution without written approval
Finish	Water-based clear coat, matt, sheen 20–30 GU at 60°
Hardware	M6 bolts, zinc-plated, 4 per chair, supplied with Allen key and assembly sheet
Packaging	Knocked down, 2 units per 5-ply carton, EPE corner protection, carton 620 × 520 × 300 mm, carton drop test 1 corner / 3 edges / 6 faces at agreed height
Quantity	600 units, with a second price requested at 1,200 units; one colour
Testing	Destination-specific stability and upholstery flammability reports naming the exact foam and fabric above
Acceptance	AQL 2.5 for major defects, zero critical; colour deviation against SW-07 under agreed light source
Commercial	USD, FOB Shenzhen, quote valid 30 days, sample charge credited against first order, 30/70 with balance after passing inspection
Lead time	Sample 14 days, production 35 days from deposit and approved sample

Notice what the sheet makes possible. Every supplier quoting against it is pricing the same chair. The inspector has numbers to check. The carton dimensions let you compute CBM and freight before the order. And if a factory wants to change the foam, it has to say so in writing, at which point you can decide whether the saving is worth it.

Seven mistakes that survive into production

• Sending a photo instead of a sheet. A photo is a starting point, not a specification. It fixes the silhouette and leaves every cost driver open.
• Using adjectives where numbers belong. "Strong", "high quality", "thick" and "premium" are unenforceable. Replace each with a value and a unit.
• Leaving packaging out of the brief. It affects freight, damage rate and, on some markets, compliance. Decide it before the quote, not after.
• Comparing quotes on unit price only. Line the quotes up against the full sheet: incoterm, packaging, certificates, sample and tooling, validity, payment terms.
• Approving a sample without a tag and a revision. Six months later nobody can say which sample was approved.
• Asking for certificates at shipment. By then the goods exist and the report cannot change them. Request it before the deposit.
• Letting the spec live in chat. A PDF with a revision number, referenced in the PO, is a contract input. A WeChat message is not.

If you would rather not build all of this from scratch on a first order, the specification, the supplier shortlist, the sample chase and the inspection brief are standard parts of a sourcing brief — the whole sequence from enquiry to delivery is mapped in how to source from China, and the on-the-ground scope is described in what a sourcing agent does. Commission on a service of that kind is normally quoted as a visible percentage of order value in the 5–15% range, shown separately from the factory price.

FAQ

How long should a product specification sheet be?

One to two pages plus marked photographs for a standard furniture item. Length is not the goal; the goal is that every field with a cost or quality consequence has a value, a standard, or an explicit "to be agreed" note. A twelve-line sheet with real numbers beats a six-page document full of adjectives.

Do Chinese factories actually read a detailed spec sheet?

Serious manufacturers do, and the good ones reply with clarifying questions — a useful signal that they have read it. Trading companies and high-volume storefronts may not. If a supplier quotes instantly against a detailed sheet without a single question, ask them to confirm three specific lines in writing before you treat the number as comparable.

Should the spec sheet be in Chinese?

Plain English is generally workable for export-oriented suppliers, and keeping one authoritative language avoids two versions drifting apart. For domestic-platform suppliers or factories without export staff, a translated version helps — but keep the English revision as the controlling document and state that on both. Technical terms, material grades and colour codes should stay in their original standard form in either language.

What tolerance is reasonable for furniture dimensions?

There is no universal number; it depends on the material and the assembly method. A few millimetres on assembled dimensions is a common working range for wooden furniture, but the right answer is the widest tolerance your end use and packaging still allow. Write whatever you choose into the sheet and make it measurable at inspection, because an unstated tolerance defaults to whatever the factory considers normal.

Can I just use the supplier's own quotation as the specification?

You can, but read it as a proposal rather than a description of what you asked for, and check it line by line against your own sheet. Quotations routinely contain "or equivalent", "standard packing" and a scope of certificates that is narrower than your market needs. Where your sheet and the quotation differ, resolve it in writing before the sample order, not after production.

Who should own the spec sheet if I work with a sourcing agent?

You should. It is your product definition and it should stay with you if the commercial relationship changes. An agent can draft and maintain it, chase approvals and turn it into an inspection brief, but the file, the revision history and the approved sample reference belong with the buyer.

Is a golden sample really necessary on a small first order?

Yes, proportionally more so: a small order has less margin available to absorb a dispute. A tagged, dated, photographed approved sample plus the written statement that production must match it costs little and is the reference an inspector needs. Skipping it leaves quality defined by memory on both sides.

Keep reading

• How to Source from China: A Step-by-Step Guide
• How to Verify a Chinese Supplier Before You Pay
• Sourcing Furniture from China: Costs, MOQs, Quality
• How to Buy from 1688: A Guide for Overseas Buyers
• The Real Cost of Importing from China: A Landed Cost Breakdown
• How to Pay a Chinese Supplier Safely