Quality & certificates

A good sample doesn't guarantee repeatable production. Confirm that the sample used the same materials, equipment, inks, tooling and processes as production, and write colour, size, tolerance, appearance and function standards into the approval. In production you need first-article approval, in-process checks, comparison to the standard sample, parameter records and final release; any change in material or process needs re-approval. The best check is to see one project's full chain from drawing to sample, approval, batch record and final inspection.

Use the same spec and acceptance criteria to compare sample consistency, key processes, material supply, order load, delivery record, issue handling and total delivered cost. Capacity must relate to your box style and bottleneck process; quotes must align quantity, tax and freight scope. Group revenue is not a measure of one factory's project capability.

Confirm that the sample and production use the same board, insert structure, printing method and finishing, then agree acceptance methods for size, colour, appearance and transit tests. For multi-accessory products, check assembly order, missing-part prevention and consistent retention across the batch. First-article and in-process checks are still needed after sample approval.

What the product is, the box style, the problems the packaging solved, real photos and a traceable project description — a client logo alone tells you little. Our Xiaomi speaker and UGREEN dock and charger cases give you product references to ask about inserts, sizes and assembly. Transit test results, volumes, yields or lead times should come from project records; where those aren't public, don't infer them from brand fame.

Reliable traceability lets you trace a finished batch or order back to the customer file version, cutting die and plates, raw-material batch, equipment, operator, first-article, in-process inspection, coding data and shipping records. Version files need approval, issue, withdrawal and obsolete marking. Variable codes need checks for duplicates, missing codes, rejection of bad codes and replacement. During an audit, run a mock trace on a real batch.

Use three layers: company and qualification information, specific product cases, and customer or third-party public records. Certificates show entity and scope, cases show products and processes, historical records show who supplied what at the time. Don't merge these into unverified long-term or exclusive claims. New projects still need checks on text versions, barcode reading, batch records and target cartoner conditions; paper carton experience doesn't replace qualifications for other pharma packaging materials.

Give each flavour and size its own item code and version number instead of relying on colour. Check copy and barcodes in prepress, clear old plates and leftovers at changeover, and keep consistent batch labels through storage, inner packs and cases. Before shipping, check quantity and version against the order and keep inspection and release records.

Verify FSC separately from other eco claims: for FSC, check the certificate holder, status and product scope; for recycled content, food-contact suitability or recyclability, check the specific material documents and test conditions. One proof never automatically substitutes for another.

The blank sample checks size, insertion and removal, closure, load and insert retention, using board thickness and grain close to the target. For transit, define the real handling, storage and shipping route and choose suitable tests; one casual drop is not a full test. Record sample spec, contents, test conditions and results, and reassess testing when product, insert, material or closure changes.

Improve material and freight efficiency: adjust L×W×H for better sheet imposition and case fill, remove non-functional layers and parts, merge similar SKU structures, and use one-piece or paper-lock designs instead of multi-part gluing to cut hand assembly. Re-verify load, protection, opening and automation fit after each change, and compare total cost, not just material per box.

Search FSC's official database by company name, certificate number or licence code and check the entity, status, product scope and certification body. Then match orders, material purchases and sales claims to confirm the batch is in scope. Recycled-content, recyclability or other eco claims need their own evidence.

Remove cavities and layers that don't protect anything, then evaluate paper locking, separable components and less lamination. Verify sustainability and protection together — reduced material must still meet scratch, load and transit requirements. 'Made of paper' doesn't mean recyclable everywhere; material combinations, coatings and local collection all affect the real recycling route.

After approval, freeze materials, files, tooling and key parameters; any substitution or change is re-evaluated and approved by you. Production runs with first-article approval, in-process checks against the standard sample, parameter records and final release. We print on Heidelberg presses and check sheets on automatic inspection machines against the approved file.

Sign an NDA before files change hands, limiting team members, use and retention. Use company channels with access control, version numbers and watermarks; log, recover or destroy samples and waste. Inside the factory, restrict downloads, plate and die issue, and photography. Cases, client logos and project data are published only with client permission.

Ask the supplier to explain the difference before assuming good or bad. Common gaps are board grade, actual grammage, greyboard thickness, insert structure, finish area and hand assembly — or samples, dies, tax or freight left out. Ask for a complete quote on the same spec and check easy-to-cut details on samples: stiffness, corners, glue flaps and retention. Confirm over/under-run tolerance, acceptance standards and issue handling.

Start with structure and size: a small dimension change can improve sheet usage and case fill, and a smarter insert can cut material and assembly steps. Ask whether every foil or UV area is needed. Quantity lowers unit cost, but don't over-buy inventory — weigh total spend, storage, redesign risk and sales pace. Keep the original spec as a baseline so you can see what each saving costs in protection, appearance or assembly.

Keep samples, case labels, batch details and clear photos, and state how many were checked, how many failed and the impact. Compare colour against the agreed signed standard; separate factory defects, packing protection issues and transit damage. Agree interim actions such as quarantine, replacement, rework or adjusted deliveries, then the root cause, corrective action and how it will be verified next time. Compensation and responsibility follow the order terms — agreeing acceptance methods in advance avoids disputes.

The signed-off sample (or the standard agreed in the contract) is the acceptance standard, and every order goes through in-process and final inspection before shipment. If you find a defect, please tell us in writing within 3–7 working days of receiving the goods, with photos or videos and your order number. After checking, we agree with you in writing on the solution — rework, replacement, a discount, or compensation.

Re-check the version even on reorders: text, barcodes, product spec and quantity, plus board, insert, finishes and the latest signed sample. 'Same as last time' in a chat can miss an interim revision, especially with multiple SKUs or staff changes. Colour can follow the retained standard sample, but watch for fading from light, age or storage. Any change of board, material source or process is discussed in advance and may need a new sample.

Our equipment covers printing, surface finishing, die-cutting and forming, coding and inspection, plus quality testing equipment — for example a colour measurement instrument for checking against signed samples, calipers for dimensions and rub testing for print durability; board can also be tested for moisture, burst and edge crush as needed. Agree what is tested, how it is sampled and the pass standard. Certificates for supplier onboarding can be requested from us before cooperation. Lead times are planned around materials, approval, process order, inspection and shipping. For export, state destination, shipping mode, receiving conditions and documents early.

Lock the board brand and batch, use a physical colour standard or approved spot colour, record ink formula, density, dot gain and equipment conditions, and evaluate under standard light. For reorders, keep the signed sample, standard sample and production records. For a multi-SKU range, build a combined colour board so the SKUs still match when placed side by side.

A credible case explains the product, goals and difficulties, structure and materials, key processes, sampling iterations, production volume range, quality standards, delivery result and permission scope — not just a logo and a photo. For known brands, support it with redacted contracts, approved-supplier certificates or verifiable records. For beauty, add colour control under standard light, bottle fit, fine finish registration and multi-SKU reorder records.

Build a blank sample with the real product to check load, removal and opening; then trial wrapping, foil or other finishes on the target material. Before production, a pilot run checks assembly rhythm, positioning and consistency, with defects and revisions recorded. The approved sample states which effects and dimensions are the acceptance basis.

Beyond logos and photos: product type, goals and challenges, structure and materials, key processes, sampling iterations, volume range, quality standards, delivery result and client permission. For rigid boxes, also ask about the split of manual and automated processes, assembly time, load tests, yield and peak-season delivery approach.

State the full Pantone reference and paper version (for example C or U), then confirm the actual board, printing method and finish. A swatch on different paper is not the same as the finished standard. Agree a physical colour standard, viewing and measurement conditions, tolerance and retained samples for reorders. The specific colour-difference target is confirmed per project; one number is not promised for every material.

Blistering, delamination or adhesion failure usually relate to board moisture and grain, adhesive match, glue weight, pressure, speed, drying and later die-cutting and folding. Before production, laminate with production materials, make ageing samples, check flatness, peel, creases and behaviour after temperature and humidity change, and record the parameters.