How to Write a Product Specification Sheet Your Turkish Supplier Can Actually Use

A product specification sheet is the written description of exactly what you are buying: materials, dimensions, tolerances, finishes, packaging, labelling and testing. It is the document your supplier produces against, your inspector checks against and your contract refers to. Many quality disputes between buyers and manufacturers do not come from bad faith, but from a brief that left too much open to interpretation. This guide explains what a usable specification sheet contains.

Why it matters

When a detail is not specified, the factory will fill the gap with its own standard, which is usually the cheapest reasonable option. That may be fine, or it may be exactly the detail your customer cares about. A specification sheet turns your expectations into measurable requirements, so that “good quality” becomes something two parties can check in the same way.

What to include

1. Product identification

Product name, your internal code, version number and date. Version control is essential once changes start.

2. Drawings and photos

Technical drawings with dimensions, or annotated photos of a reference product. Mark the critical areas clearly.

3. Materials

Material type, grade, composition, weight or thickness, and any approved material sources. Where relevant, include requirements for restricted substances in your market.

4. Dimensions and tolerances

Every important dimension with an acceptable tolerance. “50 cm” is not a specification; “50 cm ± 0.5 cm” is. Without tolerances, an inspector cannot decide pass or fail.

5. Colours and finishes

Use an objective reference such as a Pantone or RAL code, or a physical colour standard, and say under what light colour will be judged. Describe surface finishes, coatings and textures.

6. Components and accessories

Zips, fasteners, buttons, electrical parts, inserts: type, size, brand if required, and colour.

7. Functional and performance requirements

What the product must do and how it will be tested: load capacity, wash fastness, shrinkage, waterproofing, operating temperature, and so on. Reference recognised test standards where possible.

8. Packaging

Individual packaging, inner packs, master cartons, units per carton, carton dimensions and maximum weight, palletisation and any requirements for retail-ready packaging.

9. Labelling and marking

Product labels, care labels, barcodes, country-of-origin marking, carton markings and any languages or legal markings required in the destination market. Provide the final artwork files.

10. Certification and documentation

Certificates, test reports or declarations you need with each order. If you rely on certifications such as GOTS or Oeko-Tex, see our guide on how to verify them in Turkey.

11. Inspection criteria

The defect classification and AQL levels you will apply. These connect the specification directly to the pre-shipment inspection.

Write it so it can be checked

• Use numbers and references instead of adjectives such as “premium” or “strong”.
• Separate critical requirements from preferences, so the supplier knows where there is no flexibility.
• Keep the language simple. Many Turkish manufacturers work comfortably in English, but short, unambiguous sentences and labelled drawings travel best between languages.
• Link it to the approved golden sample. Where the sample and the sheet disagree, state which one takes precedence.

Control changes

Specifications change: a new colour, a different carton, an improved component. Every change should produce a new version number, a short change log and written confirmation from the supplier that they are producing to the new version. Reference the version number in each purchase order. This simple routine prevents a factory from producing a mix of old and new versions in the same order.

Use it in the contract

A specification sheet becomes much more powerful when the contract refers to it and states what happens if goods do not conform: rework, replacement, price adjustment or rejection. It is also the first thing to send when you request product samples from suppliers, because it allows them to quote and sample accurately.

Working with MOPCONS

In our Sourcing Agent work, the technical details agreed with the supplier are carried into the contract, and under Supply Chain Management production is tested against the technical specifications in your contract. Our team is based in Ataşehir, İstanbul. Send us the product, estimated quantities, target price range and destination country: email info@mopcons.com, call +90 216 606 38 63 or message us on WhatsApp (+90 533 339 52 02), or use the contact form.