Sample & Quotation Request Guide for Packing, Shipping & Export Standards

What a Weak Brief Actually Costs You #

A brand manager came to us last year with a corrugated export shipper project — single SKU, 500-unit trial order, needed for a US retail launch. The first quote we issued was based on a rough carton size and a vague “standard brown box” description. Two sample rounds later, we were re-engineering the flute grade because the actual product weight was 40% heavier than what had been assumed. The revised tooling added 18 working days and a cost delta on the corrugated board alone that wiped out the savings from the lower MOQ tier.

The brief gap was not the buyer’s fault — they simply didn’t know what information a factory needs to lock a quote. The dimension they provided was the product footprint, not the pack-out configuration. They hadn’t specified whether the shipper needed to meet ISTA 2A drop and vibration thresholds for parcel carrier shipment. And the artwork they sent was a 72 DPI JPEG with no bleed. Three separate requote triggers in one brief.

This guide covers what to prepare before you send that first RFQ — specifically for export and transit packaging — so you don’t absorb those weeks yourself.

The 7 Structural Data Points That Lock a Quote #

Before we can issue a firm price for any export or transit packaging, we run every incoming brief through what we call our QPF-01 (Quotation Pre-Flight) check. Seven data points gate the process. Quotes issued without all seven are flagged as indicative only — meaning the price will change after sampling.

Here’s what those seven points are and why each one matters:

1. Pack-out configuration. Not just the product dimensions — the unit count per shipper, orientation (upright vs. lay-flat), and whether inner packaging (foam, divider, tissue) is included. A 200mm × 150mm × 80mm product sitting 4-up upright needs a fundamentally different box design than the same product 8-up on its side.

2. Gross weight per shipper. Corrugated flute selection depends on this. B-flute (3.0–3.5mm caliper) handles most light-to-medium retail goods under 8kg gross. For shippers above 12kg, we typically specify C-flute (3.5–4.0mm) or BC double-wall. Quoting without a confirmed gross weight means we’re guessing the board grade.

3. Distribution channel. Palletised LCL/FCL ocean freight has different performance requirements than FedEx/UPS parcel. For parcel, we design to ISTA 2A — a test sequence covering six drop orientations and random vibration. For pallet freight, the box compression strength (BCT) matters more than drop resistance. These are different structural solutions and different costs.

4. Destination market. Several markets have import-specific marking requirements. The US requires country-of-origin labelling per 19 CFR Part 134. Some EU member states require language-specific hazard text on certain product categories. Getting this wrong after printing means scrapping a print run.

5. Quantity tiers. We quote three tiers as standard: trial (usually 500–1,000 units), first commercial (3,000–5,000 units), and repeat (10,000+ units). The unit economics shift meaningfully — board procurement, die-cutting setup amortisation, and print plate cost are spread differently across each tier. A single-tier quote is misleading.

6. Surface print requirement. Plain brown, one-colour print, or full four-colour with barcodes and regulatory text? A plain RSC (Regular Slotted Container) and a litho-laminated shipper with CMYK branding are weeks apart in sampling time and significantly different in tooling cost.

7. Certification or compliance requirement. FSC chain-of-custody certification, food-contact compliance per FDA 21 CFR §176.170, or REACH compliance for inks and adhesives — these require documented supply chain verification. We can support all three, but they must be flagged at brief stage, not after sampling.

Artwork Files: What “Print-Ready” Actually Means for Export Packaging #

Most delays on printed export shippers trace back to artwork, not structural design. The format requirements are not arbitrary — they reflect real press and pre-press constraints.

We accept PDF/X-4 or PDF/X-1a as the primary file format for offset and flexo print production. AI and EPS are workable but require a confirmed outline-fonts step. JPEGs are not print-ready regardless of resolution — they are reference files only. If your designer sends a JPEG, we will use it as a visual reference while we rebuild the file, which adds 2–3 working days and a pre-press charge.

Minimum resolution for raster elements is 300 DPI at final print size. Line art and logos should be vector. Bleed must be 3mm on all sides for folding carton and litho-laminated shippers; for flexo-printed corrugated, we work with 5mm bleed because registration tolerance on a flexo line is wider (typically ±1.0–1.5mm vs. ±0.3mm on sheet-fed offset).

Colour specification matters more than most buyers expect. If your brand has a Pantone reference, include it in the file — do not assume CMYK conversion will match. For export shippers where brand consistency is secondary to legibility (regulatory text, barcodes), CMYK is fine. For any branded shipper where the box is seen by the end consumer, specify Pantone and note whether it’s coated (C) or uncoated (U). We match to the coated reference by default unless told otherwise.

Barcodes must be provided as vector with a minimum quiet zone of 2.5mm on each side. We verify scanability against GS1 standards before approving press files — a barcode that fails scan on the factory floor means reprinting.

Decision Framework: Which Sample Type Do You Actually Need? #

There are three sample stages, and skipping one to save time usually costs more time overall.

If you need to check structural fit and pack-out configuration before committing to print, request a white sample (also called a proto or engineering sample). We produce these unprinted from production-grade board. Turnaround is 5–7 working days from confirmed dimensions. Cost is typically charged at cost-plus, credited against first order. This is the right choice for any new structural design.

If the structure is confirmed but you need colour and artwork sign-off, request a printed proof. We produce these either as digital proofs (inkjet on production substrate, 3–4 working days) or as short-run offset press proofs (7–10 working days, higher cost, but closer to production colour). For export shippers with significant regulatory text, press proofs are worth the extra time — digital proofs can show colour shifts at 100% ink coverage on kraft substrates.

If you are approaching production sign-off, the production sample (first-off) is pulled from the actual production run before the full quantity ships. This is not optional in our process for orders above 3,000 units — we send a pre-shipment sample with a QC checklist before packing. Under GB/T 6543-2008 (the Chinese national standard for corrugated carton quality), we inspect BCT, moisture content (target ≤14%), and print registration on this sample.

Don’t conflate stage 1 and stage 2. A white sample tells you nothing about colour. A digital proof tells you nothing about compression strength. Combining them into one “sample round” is where projects lose 2–3 weeks re-sampling things that could have been caught in sequence.

One boundary condition: for very simple plain brown RSC shippers with no print and a confirmed structural repeat (same as a previous order), we sometimes skip the white sample stage and go direct to a pre-shipment pull. This only works when the structural specification is genuinely unchanged — if the product weight has shifted by more than 10%, treat it as a new design.

Specification Notes for Brand Partners #

When you brief us on export or transit packaging, the information we most need upfront is: product weight (gross, per shipper unit), pack-out count and orientation, destination market and distribution channel, quantity tiers for the initial order, and any certification requirements (FSC, FDA, REACH). A technical drawing or reference sample photo is helpful but not mandatory at brief stage.

The most common gap we see is buyers providing inner product dimensions but not the full packed weight including inner packaging, tissue, foam, or dividers. A shipper designed for 6kg gross that ends up carrying 9kg gross will fail BCT under pallet stacking — typically at a stacking height of 4 pallets (roughly 2,400mm). Confirm your gross packed weight before briefing, not after the first sample.

Our standard white sample turnaround is 5–7 working days from confirmed dimensions. Printed samples add 3–10 working days depending on proof type. Full production lead time for corrugated export shippers is 15–20 working days after sample approval and purchase order. Litho-laminated or custom-printed shippers run 20–28 working days. If you need to hit a specific ship date, work backwards from that date and brief us at least 35 working days out for any printed export packaging.

How do I know if I need B-flute or C-flute for my shipper?

It comes down to gross packed weight and stacking requirements. For single-wall shippers under 8kg gross, B-flute (3.0–3.5mm caliper) is sufficient for most parcel distribution scenarios. C-flute (3.5–4.0mm) is our default for 8–14kg or for anything going pallet freight where BCT under stacking load matters more than cushioning. Above 14kg or for heavy retail display shippers, we move to BC double-wall. If you’re unsure, send us the gross weight and we’ll recommend based on our standard BCT calculation.

Can I get a sample before I confirm the full order quantity?

Yes — white samples are produced as standalone pieces at cost-plus pricing, credited back on the first commercial order. Printed press proofs have a fixed setup cost that is not credited, but digital proofs are lower cost and suitable for most artwork approvals. The only thing we won’t produce without a purchase order is a full production run.

What file format should I send for the box artwork?

PDF/X-4 is the format that moves through our pre-press process fastest. If your designer works in Adobe Illustrator, export to PDF with fonts outlined and bleed set to 3mm (5mm for flexo). JPEG files are reference quality only — they can’t go to press without rebuilding, which adds time and cost. Pantone colour references should be included in the file, not communicated separately.

My supplier quoted 30% cheaper than you — why such a difference?

Price differences of that magnitude usually trace to three variables: board grade specification, print scope, and certification overhead. A plain B-flute RSC with no print and no FSC requirement will be priced very differently from a C-flute FSC-certified shipper with four-colour litho lamination. Ask competing suppliers to specify the board grade (flute type, ECT or BCT rating), print method, and whether FSC or any other certification is included in the quoted price. Comparing quotes without these details is comparing different products, not different prices.

How long does the full sample-to-production process take for export shippers?

For a new structural design with printed artwork: allow 5–7 working days for the white sample, 3–7 working days for artwork revisions and proof approval, then 15–25 working days for production depending on print complexity. That’s 23–39 working days from brief to shipped product in the best case. If you’re working to a fixed launch date, brief us with at least 35 working days of runway and flag the deadline explicitly — we can sometimes compress the sampling phase if the structure is straightforward, but we can’t compress production once the board is cut.

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Planning a packaging project? Contact our team to request a complimentary specification review and sample quote.