How Handbag OEM Works: From Your Tech Pack to Finished Cartons

How does an OEM handbag programme actually run? In nine stages, and only two of them are about making bags: a technical review that turns a drawing into a dimensioned specification, pattern making and a cutting die, material confirmation against a physical swatch, hardware tooling released in parallel, a first sample and a revision round, a specification freeze, the 35-50 day bulk run, pre-shipment inspection at AQL 2.5 under ISO 2859-1, and packing to a carton specification. The stage that decides whether a launch hits its season is the freeze — every day lost after the specification is frozen is a day taken from the 35-50 day bulk window, and every day lost before it is free. A programme that arrives with a complete tech pack finishes in about 55-80 days from signed brief to goods handed to a forwarder at FOB Xiamen.

The nine stages in figures

One Order, Nine Stages: A Programme in Toronto

An accessories label in Toronto sent a brief in early February: two silhouettes, 1,200 pieces total, a target retail of CAD 145 and a launch date in late June. The drawings were good and the dimensions were not — strap drop was shown as comfortable, gusset depth was implied by a side photograph, and the hardware was described as a brushed gold turn lock with no alloy or plating thickness given.

That brief produced a quotation range too wide to plan against, which is the normal outcome when a specification contains adjectives. The technical review stage converted it into numbers over three days: body 32 cm wide, gusset 11 cm, strap drop 26 cm, zinc alloy with a stated plating thickness, magnetic closure at a stated pull strength. The range collapsed to a single figure 14 percent below the top of the original band, because the sampler had been pricing uncertainty.

From there the programme ran the standard nine stages and shipped in 68 days from signed brief. The two moments that nearly cost the season were both avoidable: the hardware tooling was released nine days after the deposit rather than with it, and the carton specification was confirmed during inspection week rather than at booking. Neither delayed the goods, but both consumed contingency that a later order would have needed.

Stage by Stage: What Happens to Your Tech Pack

A tech pack arriving at a production programme is not a drawing to be admired; it is a set of instructions to be checked. The first stage is a technical review that asks one question of every line: can this be measured? Anything that cannot be measured — comfortable, soft, premium feel, good stitching — comes back as a request for a number, and the review is not complete until every line has one.

1. Dimensions in millimetres. Body width, height, gusset depth and strap drop, each with a stated tolerance of plus or minus 3 mm.
2. Material by article and substance. Not just leather, but a named article at 1.2-1.4 mm with a temper.
3. Hardware by alloy and finish. Zinc alloy with a plating thickness in microns and a corrosion benchmark, commonly 24 hours to first corrosion under ASTM B117.
4. Stitch specification. Tex 40 thread at 7-9 stitches per inch with a 10 mm seam allowance.
5. Branding position from a datum edge. Embossing, plate, woven label or embroidery, measured in millimetres.
6. Packaging and marking. Dust bag, hangtag, barcode symbology and carton marks.

The output of this stage is a dimensioned specification with a revision number, and that document is what every later stage refers to. A programme that skips the review does not save time; it relocates the same questions into the sampling window, where each one costs a full round.

Pattern, Cutting Die and the First Sample

Once the specification is dimensioned, pattern making converts it into the flat shapes that will be cut. This takes 3-6 days and produces two things: the pattern set, and a decision about whether a steel-rule cutting die is needed. Where the panel profile is new, a die is cut at USD 80-200 and 3-6 days; where an existing profile can be adapted, nothing is cut at all.

• Grading, if required. A size run adds 1-2 days and should be requested only where the line genuinely needs more than one size.
• Yield check. Panels are nested against the marker before the first cut; a 1.4-1.9 sq ft tote panel layout is confirmed here rather than discovered later.
• First sample. One bag in the confirmed material, produced in 6-10 working days for a standard construction and 12-15 for a framed or stacked one.
• Photographic review. Annotated photographs rather than a written list; every comment numbered and tied to a dimension.

The first sample of a new silhouette almost always reveals one thing the drawing did not: a proportion that reads differently in three dimensions. That is not a defect in the work, it is the reason sampling exists. What turns it into a delay is feedback given verbally or as a general impression, which forces a second round of interpretation. The sample revision process sets out how to keep revision to a single numbered round.

Material Confirmation and the Dye Lot

Material confirmation is the stage most likely to be rushed and the one that produces the most expensive errors. It has one rule: approve a physical swatch, not a photograph. Screens render colour differently and a Delta E of 4.0 is invisible on a monitor and obvious on a shelf, so the standard used is Delta E 2.0 or better against the approved reference under a defined light source.

The dye lot is the part to plan around. Each colourway is a separate lot with its own minimum, which is why MOQ is 500 pcs per style and per colourway rather than per style. A second colourway added after the first lot is dyed is a second lot with its own lead time, and shades matched to the same Pantone TCX reference can still drift by a visible margin between lots.

Hardware Release and the Parallel Path

Hardware is the only stage that runs in parallel, and it is the one that most often loses the calendar through inattention. A zinc alloy die-cast mould takes 15-25 days, which fits comfortably inside the sampling window — but only if the tooling is released when the deposit is paid. Released at sample approval instead, the same 15-25 days land at the front of the bulk window and push the whole programme past its slot.

• Release tooling with the deposit. Not after the sample is approved; the sample rarely changes the hardware.
• Specify plating in microns. Thickness, not a colour name, is what the plating line works to.
• Set a corrosion benchmark. 24 hours to first corrosion under ASTM B117 is the usual requirement for zinc alloy parts.
• Ask for a first-article piece. One part off the new mould, checked for flash and fit before the run starts.
• Record it on the tooling register. Mould, cavity count, owner and storage location.

The Specification Freeze That Holds the Calendar

Between the approved sample and the bulk run sits a decision that is really a discipline: freeze the specification. From the moment the freeze is declared, no change is accepted without a written cost in days and money. This is not bureaucracy — it is the mechanism that protects the 35-50 day window, because a change made during bulk does not take a day, it takes the remaining schedule.

1. Declare the freeze in writing. One email, with the specification revision number attached.
2. Pay the deposit and book the slot together. A slot requested at approval is a slot requested after the board has filled.
3. Route any later change through a cost note. Days and money, stated before the change is made.
4. Confirm the inspection date at booking. Pre-shipment inspection needs a pencilled date, not a hope.

Programmes coordinated through our validated partner factory Quanzhou Yingming Bags run seven lines with export experience since 2014, and the freeze is the single habit that separates the programmes that ship on time from the ones that ship late. Anything that has to change after the freeze is better handled as a revision on the next order.

Bulk: What Happens on the Line

The bulk run is where the plan meets the material, and it is worth knowing what actually occupies 35-50 days. Cutting happens first and fast; the time is consumed by sewing, finishing and inspection, and by the fact that a line must be set, balanced and run at a steady rate rather than rushed.

Finishing is the bottleneck more often than sewing, and edge painting is usually why. A bag with painted edges spends 6-9 minutes longer at the bench than one with turned edges, and on a 1,200 piece order that is 120-180 hours of bench time — several days of calendar that no amount of urgency recovers.

Inspection, Packing and the Carton Specification

Pre-shipment inspection at AQL 2.5 under ISO 2859-1 is the stage that converts quality from an opinion into a threshold. The standard sets how many units are drawn from a lot of a given size and how many defects of each class trigger a pass, a fail or a re-sort, and the written report is issued to the buyer. Third-party inspection by SGS is available where an independent record is needed.

Packing is specified, not assumed, and the specification should be confirmed at booking rather than during inspection week. A carton specification covers five things: carton grade, count per carton, gross weight limit, polybag and protection, and marking. Getting these wrong does not delay the goods but it does cause damage claims and marketplace receiving problems.

• Carton grade. Five-ply corrugated for export, sized to the packed count rather than to whatever is available.
• Count per carton. Typically 10-20 pieces for a handbag, set by volume and by the weight limit.
• Gross weight limit. 18 kg is a common ceiling, set by handling practice at the destination warehouse.
• Protection. A polybag at 0.03 mm minimum per piece, with tissue or paper stuffing to hold shape.
• Marking. Shipping marks, carton numbers and barcode symbology — EAN-13 for retail, or the marketplace label required at the destination.

Where a marketplace fulfilment centre is the destination, its prep rules override the defaults. Carton dimensions, label placement and pallet configuration are all specified by the receiving warehouse, and confirming them at booking rather than on dispatch day avoids the repacking charges that turn a profitable order into a marginal one.

Documents That Leave With the Goods

The final stage is paperwork, and it is the stage that determines whether goods clear and whether a retail buyer accepts them. Six documents should be prepared before the container is loaded, not after.

1. Commercial invoice and packing list. With the harmonised code, the declared value and the carton count.
2. Inspection report. AQL 2.5 under ISO 2859-1, issued to the buyer, with the defect breakdown.
3. Material test reports. REACH Annex XVII and Proposition 65 as applicable to the destination market.
4. Audit references. BSCI (amfori) or Sedex / SMETA for the facility, where a retail buyer requires them.
5. Certificate of origin where a preferential duty claim is being made.
6. Bill of lading released according to the payment term agreed, with T/T the standard arrangement.

With the documents attached, goods are handed to the forwarder at FOB Xiamen, with CIF and DDP available on request. Transit runs 18-28 days to the United States West Coast or 30-38 days to Northern Europe by sea, and 5-8 days by air where the calendar demands it. The Toronto programme cleared in 68 days from signed brief to handover, with the nine stages intact and the contingency it had nearly spent still available for the second order. The OEM brief checklist covers what to send at stage one, the MOQ expectations explain the quantity floor, and the OEM services page sets the full frame.

Where Each Stage Slips, and the Control That Holds It

Every stage in a nine-stage programme has a characteristic failure, and the failures are consistent enough to plan against. The table pairs each stage with its usual slip, expressed in days, and with the control that holds it. The total is the interesting part: the slips do not add up to a week, they add up to a season.

What the Brand Has to Deliver at Each Gate

A programme slips at the handovers, and most handovers are waiting on the brand rather than on the line. Naming the four gates and what crosses each one removes the waiting, and it turns the schedule into a joint document rather than a promise made by one side.

1. At brief. Dimensioned drawings, material direction, quantity per colourway, target retail price, destination market and vector artwork.
2. Before sampling. Approved material swatches and a confirmed branding position measured from a datum edge.
3. At sample review. A numbered revision list, with one decision per item and a named approver.
4. At freeze. Signed specification, deposit, booked slot, and a pencilled inspection date at AQL 2.5 under ISO 2859-1.

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