Guangzhou, China · GMT+8, replies within 12h
 ·  alicelin930@gmail.com
Design & Sampling

Structure first.
Then print.

80% of packaging problems — product rattling, lids that don't close, freight you didn't need to pay — are decided at the dieline stage, before a single sheet is printed. We engineer the structure, prove it with a physical sample, then run production.

Dieline in 24h Sample in 24–72h 2mm greyboard specialists
Magnetic book-style rigid box engineered with printed interior and tool cavities
What We Engineer

Three things a good structure does

Not decoration — engineering decisions that show up on your P&L and on your damage claims.

📐

Fit & protection

Insert cavities cut to your product's actual dimensions, wall thickness where the load is. Glass bottles, jars, droppers, tools and multi-piece kits all get a different solution.

💸

Cost down, not looks down

Right-sizing the box, dropping one board grade, switching a foil to cold foil, or shipping flat can cut 15–60% of unit or freight cost without changing what the customer sees.

🚚

Freight & storage

Fold-flat rigid boxes and nested trays ship in a fraction of the volume of assembled boxes. We model the pallet, not just the box.

Our Process

Four steps, no surprises

Brief & dieline

Send product photos, dimensions and target price. You get a dieline (PDF/DXF) and a structure recommendation — free, within 24h.

Sample

Plain white sample to test fit, or digitally printed sample to judge artwork and colour. Courier worldwide.

Validation

Fit check, colour proof against Pantone, drop and compression test in-house. We adjust the dieline before tooling.

Production & QC

Print, foil, die-cut, mount, inspect 100%, then photo/video QC report before the carton is sealed.

Sample Types

Pay for the sample you actually need

Most projects only need step 2. Sample cost is credited back against the bulk order.

Sample typeWhat you getTypical lead timeCost
3D renderDigital visual of the structure with your artwork mapped on. For internal sign-off.24hFree
Plain sampleUnprinted box in the specified board and thickness — for fit, size and stiffness testing.24–48hFree (courier only)
Digital printed sampleYour artwork printed and cut on the real structure, including one finish.3–5 daysUSD 50–150, credited on bulk order
Production-match sampleSame board, same ink, same foil and lamination as the bulk run. For retail buyer approval.5–7 daysQuoted per structure

Lead times are typical, not a promise — structures with magnets, moulded pulp or multi-layer inserts take longer. We confirm dates in writing before starting.

Validation & QC

What "checked" actually means here

A sample that looks right on a desk is not the same as a box that survives a container. These checks run before tooling and before shipment.

  • Fit check — your physical product, or a same-size dummy, placed in the actual insert
  • Colour proof — printed sheet compared to your Pantone reference under D50 light
  • Drop & compression — in-house checks on the packed unit, not just the empty box
  • Closure cycles — magnets, hinges and drawers opened 50+ times for wear
  • 100% inspection — every piece checked before packing, not sampled
  • Photo & video QC report — sent before the carton is sealed, so you approve what ships
Cream jar held by a custom EVA insert inside a rose-gold rigid box

What you receive with the dieline

Cutting dieline (PDF + DXF), 3D visual, recommended board and GSM, insert drawing, and a cost breakdown by component — so you can see exactly what each upgrade adds.

Common Questions

Design & sampling FAQ

No. Dieline engineering and the structure recommendation are free — it's part of quoting. You only pay for physical samples, and that amount is credited back when you place the bulk order.

You do. The cutting file is yours to keep and reuse, including with another supplier. We don't lock structures behind tooling fees.

Yes. Send the AI/PDF/DXF and we'll run a fit and feasibility check first. If we spot a weakness — a lid that will bow, a base that needs more board — we'll tell you before printing, not after.

That's the normal case. Send the product dimensions (or the product itself) and we build the structure around it — including odd shapes, multi-piece kits and bottles with pumps or droppers.

Send one physical sample. We reverse-engineer board thickness, wrap, finish and insert, then quote a matched version — usually cheaper, since we can also suggest where the original is over-specified.

Send the product. We'll send the structure.

Photos, dimensions and target retail price are enough to start. Dieline and cost comparison back within 12 working hours.

Start a project
Lemonleaf Support Alice is online · replies in minutes
Hi! 👋 I'm Alice from Lemonleaf Packaging. Need a quote, a sample, or packaging advice? Pick a way to reach me:
Working hours: Mon–Sat 9:00–18:00 (GMT+8). We reply to all messages.