Clothing Production in China: From Tech Pack to Bulk Shipment

Clothing production in China follows the same industrial sequence everywhere: your tech pack becomes a sample, the approved sample locks materials and construction, bulk cutting and sewing follow, quality inspection gates shipment, and freight closes the order.

This guide walks each stage with realistic timelines and the one decision that matters at each gate.

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What happens from tech pack to approved sample?

Everything in bulk production is downstream of this stage. The factory reads your tech pack, drafts or checks the pattern, sources sample-yardage fabric and sews a development sample. At our factory this takes 8–15 days depending on category and decoration. Expect one to three revision rounds; each round should produce a written comment list against a versioned file, not a scattered chat thread.

• Measurements: check every point of measure against tolerance, not only chest and length.
• Fabric: confirm composition, weight, hand feel and colour against the intended bulk material.
• Decoration: approve a print strike-off or embroidery sew-out at final size and placement.
• Labels and trims: sign off artwork, material and attachment method before bulk.
• Timing: fix the sample ship date and courier arrangements in the order confirmation.

The most expensive development mistakes are silent ones: a factory that cuts without asking questions, or a buyer who approves a sample sewn from substitute fabric “just to check fit” and forgets the substitution was made. Write every open question into the comment sheet and close it before the next round. A factory that flags conflicts in your specification before cutting is protecting your margin, not arguing with your design.

The gate is the pre-production sample: one garment made with bulk fabric, bulk trims and bulk methods, sealed and countersigned. If you are new to the specification side, read what a factory needs in a tech pack first, and see how pattern making and grading turns the file into production templates. Our sample development page lists the milestone sequence a serious factory should commit to.

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How are fabrics and trims sourced and approved?

Once the sample direction is approved, the factory books bulk materials. Stock fabric from local markets can be cut within days; custom-dyed or custom-woven fabric adds lab-dip rounds and mill minimums and is the single most common source of delay. The buyer’s job is to approve fast and approve physically: a lab dip on screen is not an approval.

Two numbers decide material lead time more than any others: whether the fabric is stock or custom, and how many colourways you run. Each custom dye lot carries its own minimum and lab-dip round, so a four-colour custom program quadruples the colour-approval work. If the launch date is fixed, reduce colourways before you reduce quality. Plan material-approval time into your calendar the way you plan production time.

• Composition and construction: fibre blend, knit or weave, yarn count where relevant.
• Weight: target GSM with a tolerance — our fabric weight guide gives realistic ranges by garment.
• Colour: lab dip or strike-off approved in the final dye lot, checked under consistent light.
• Hand and performance: wash the sample as the customer will, then re-check shrinkage, spirality and surface.
• Trims: zippers, drawcords, buttons, labels and packaging approved on a physical trim card.
• Reorders: record the mill code and approved shade band so the next lot matches the first.

This is where China’s regional supply chains earn their reputation — in the Pearl River Delta a fabric question is often answered the same day. A disciplined fabric sourcing process records every approval against a mill or market code so repeat orders match the original. Ask what happens when the approved fabric runs out mid-program — the substitute-approval rule should be in writing before it is needed.

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What happens during bulk cutting and sewing?

With the pre-production sample sealed and materials on site, bulk begins: marker making, fabric spreading, cutting, line sewing, then finishing — trimming, pressing, folding and packing. Decoration such as printing, embroidery or washing typically runs through specialist partner workshops between sewing and finishing; at our factory those partners are audited, while cutting, sewing and finishing stay in-house. Bulk at our facility runs 24–30 days after approval, and 12–18 days on the blank/logo program where the garment body already exists.

Size ratio matters here. Cutting markers plan how many pieces of each size come from one lay of fabric, so an order split heavily into rare sizes wastes material and slows cutting. Confirm your size breakdown early, and expect the factory to ask for it before quoting — a quote given without a size ratio is an estimate wearing a suit.

• Keep approval turnaround under 48 hours once bulk starts — the line cannot wait a week for a colour answer.
• Freeze the specification at the sealed sample; mid-bulk changes cost more than they save.
• Ask for in-line photos at first output, mid-production and pre-packing.
• Confirm the ship-ready date in writing before the final inspection is booked.
• On repeat orders, reconfirm the fabric lot and shade band even when “nothing changed”.

For the factory-side view of this stage, see our garment production capability and cut-and-sew process; decoration options are covered under printing and embroidery in China. This article stays at the industry level — those pages show our specific floor. Whichever factory you use, the stage order above is the industry standard — be suspicious of any quote that skips a gate to sound faster.

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How is quality inspected before shipment?

Serious factories inspect at three points: incoming fabric, in-line during sewing, and a final random inspection against AQL — the acceptable quality limit sampling method formalized in ISO 2859-1. AQL does not mean “zero defects”; it defines how many pieces are pulled and how many defects fail the lot. Our floor runs in-line plus final inspection, and buyers may add their own third-party inspector.

Decide defect severity before inspection day. A broken stitch at a stress point is critical; a faint shade variation inside a collar may be minor; untrimmed threads are usually cosmetic. If the factory and the inspector classify defects the same way, the AQL result becomes a decision tool instead of an argument. Book any third-party inspection about a week ahead, and give the inspector the tech pack, sealed sample and defect list — an inspector working from memory finds less. The AQL level itself — commonly 2.5 for major defects in apparel — is agreed when the inspection is booked, not negotiated after a failure.

Ask for the inspection report format before production, not after a failure. Keep the sealed approval sample accessible to whoever inspects, and request category-relevant test reports — we issue AZO-free batch test reports and a CE Declaration of Conformity where applicable; our certificates page shows the document types to expect from any compliant factory. A factory that shares its report template before you ask is showing process maturity.

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How does shipping work, and what do buyers ask most?

The last stage is logistics. Samples and urgent small orders move by express courier — DHL, FedEx or UPS — in days. Bulk orders move by air freight when speed justifies cost, or by sea freight when it does not. Your exposure depends on the incoterm: EXW puts everything from the factory gate on you, FOB ends the seller’s responsibility at the port of loading, and DDP delivers duty-paid to your door at a higher headline price. New importers usually find FOB with their own forwarder the best balance of cost and control. Whichever mode you choose, get the ship-ready date, carton data and documents checklist in one written confirmation.

Freight planning starts at the quote stage, not at the port. Carton dimensions and gross weight decide freight cost, so ask for estimated packing data with the bulk quote and model express, air and sea on the same numbers. Sea freight rewards early booking; express rewards small cartons. Add cargo insurance on sea shipments — the small premium is cheaper than one lost-carton claim.

• Commercial invoice and packing list, matching the actual carton contents.
• Bill of lading or airway bill naming the correct consignee.
• Country-of-origin and fibre-content labels on every garment.
• Any test reports or conformity documents your category requires.
• A customs broker engaged before the goods land, not after.

The CBP basic importing guidance covers entry requirements, and the FTC textile labelling guide covers the fibre, origin and identity labels US-bound garments must carry. Confirm label artwork before bulk sewing — relabelling a finished order is the most expensive fix in the whole process.

How long does clothing production take in China?

A typical first order runs six to ten weeks ex-works: 8–15 days of sampling, material booking in parallel, 24–30 days of bulk after approval, then freight. Blank and logo programs compress this to roughly two to four weeks because development is already done, and repeat orders on approved styles are faster for the same reason.

What is a pre-production sample?

The pre-production sample is one garment made with bulk fabric, trims and methods, approved and sealed before cutting starts. It is the physical contract the bulk inspection is measured against — if bulk differs from it, the factory owns the problem.

What does AQL mean in garment inspection?

AQL, the acceptable quality limit, is a statistical sampling method: an inspector pulls a defined number of pieces from the lot and fails it if defects exceed the agreed level. It measures consistency, not perfection, so pair it with a written defect-classification list.

Should I choose EXW, FOB or DDP shipping terms?

FOB suits most importers: the factory delivers to the port, your forwarder controls the rest. EXW is cheapest on paper but shifts export logistics to you; DDP is simplest but hides the cost breakdown. Whichever you choose, name the port or place in the purchase order — “FOB China” is not a term.

What documents do I need to import clothing into the US?

At minimum a commercial invoice, packing list and bill of lading or airway bill, plus correctly labelled garments. A customs broker confirms tariff classification and any category-specific requirements before entry. Keep fibre and origin records from sourcing onward — traceability questions are easier to answer before shipment than at the border.

When you are ready to run this sequence against a real style, send the tech pack or reference garment and we will map your timeline stage by stage.