Technical File for CE Marking: Content, Evidence, Retention
What a CE marking technical file must contain: product description, risk assessment, test reports, supplier evidence, 10-year retention and version control.

To meet CE marking requirements, a manufacturer must identify every EU law that applies to its product, meet the essential requirements, complete the conformity assessment, prepare a technical file and sign an EU declaration of conformity. Only then may it affix the CE marking. For most technical products made outside the EU, an economic operator established in the EU must also be named.
CE marking requirements fall on the manufacturer. Under EU law, the manufacturer is the company that makes a product, or has it designed or made, and sells it under its own name or trademark. You do not need to own a factory. If the product carries your brand, you are the manufacturer, wherever you are located.
EU companies can take on the same role. An importer or distributor becomes the manufacturer when it sells a product under its own name or trademark, or when it modifies a product already on the market in a way that may affect compliance.
The CE marking may only be affixed to products covered by EU legislation that provides for it. Machinery, electrical equipment, radio equipment, toys and pressure equipment are examples. Many consumer products, such as furniture or bicycles, fall only under the General Product Safety Regulation (GPSR) and must not bear the CE marking. Putting CE on a product outside the scope is itself an infringement.
A product can fall under several EU laws at the same time, and it must meet all of them. For each candidate law, read three parts in this order: the subject matter (usually Article 1), the scope and exclusions (usually Article 2, sometimes with an annex) and the definitions. Consider the intended use and reasonably foreseeable misuse.
For industrial products, the core laws are:
These laws interact. For machinery, electrical hazards are covered by the machinery law, so there is no separate LVD assessment. For radio equipment, the RED covers safety and EMC, so the LVD and the EMC Directive are not applied separately. RoHS usually applies on top. Record each decision, including the laws you excluded and the article or annex that supports the choice. This record becomes the first page of your technical file. The CE Marking Fundamentals course includes an applicability checklist for this step.
EU laws set essential requirements: the results a product must achieve. Harmonised standards describe technical ways to reach them. A European standard (EN) becomes harmonised when it is developed on a request from the European Commission and its reference is published in the Official Journal of the European Union. Applying it then gives a presumption of conformity.
That presumption has limits. It covers only the requirements listed in the standard's Annex ZA or ZZ table (Annex A for ETSI standards), and only for products within its scope. Harmonised standards are voluntary, but without them you must show yourself how each requirement is met. Record the full reference with year and amendments, and check the edition currently cited and any restrictions in the citation. Standards from outside the EU, such as UL or GB standards, give no presumption of conformity in the EU. Our guide to harmonised standards and presumption of conformity explains how to find the right edition.
Conformity assessment shows that the product meets the essential requirements before it is placed on the market. Decision No 768/2008/EC provides a menu of procedures, called modules, identified by letters from A to H. Each law selects the modules it allows.
| Law | Typical route | Notified body needed? |
|---|---|---|
| LVD, RoHS | Module A only | No |
| EMC | Module A, or module B + C | Only for B + C |
| RED | Module A for safety and EMC; for radio and cybersecurity, module A only with harmonised standards fully applied | Otherwise yes (B + C or H) |
| Machinery | Internal check (module A) for most machines | Only for listed categories |
| ATEX, PED | Depends on the equipment category | Yes for higher categories |
Module A, internal production control, means the manufacturer carries out the whole assessment alone. A notified body is a third-party organisation designated by a Member State for specific laws, modules and products. Its scope can be checked in NANDO, the Commission's public database. Even under module A, you need complete evidence, because a market surveillance authority can ask for it. Our guide do I need a notified body goes through the rules law by law.
The technical documentation is your evidence of conformity. Under module A of Decision No 768/2008/EC it contains, wherever applicable:
The file must be ready before the product is placed on the market. You keep it for 10 years after placing on the market, unless the specific law says otherwise, and update it after every design change. Market surveillance authorities can see it on a reasoned request. Customers have no general right to it.
Next, you draw up the EU Declaration of Conformity (DoC). When several laws apply, you sign a single declaration that lists all of them. It must be translated into the language or languages required by the Member State where the product is made available. See our guide to the EU declaration of conformity for its content.
Article 4 of Regulation (EU) 2019/1020 covers products under a list of EU laws, including machinery, LVD, EMC, RED and RoHS. For these products, an economic operator established in the EU must be responsible for certain compliance tasks. A manufacturer outside the EU cannot fill this role itself. The operator can be an importer, an EU authorised representative or, when none of these is in the EU, a fulfilment service provider.
Only the manufacturer, or its authorised representative acting on its behalf, may affix the CE marking. It comes last, after the conformity assessment, the technical file and the declaration. The marking keeps the official proportions, is at least 5 mm high unless the specific law says otherwise, and must be visible, legible and indelible. A four-digit number after it, shown as CE xxxx, appears only when a notified body is involved in the production control phase.
The product, or where that is not possible its packaging or an accompanying document, also needs:
Customs may suspend release for free circulation when required documents, markings or Article 4 details are missing. Check that the model name matches on the plate, the declaration, the instructions and the technical file.
Placing on the market happens unit by unit. Each unit must meet the rules in force on the day it is placed on the market, so a design that complied in the past is not automatically compliant today. Investigate complaints, keep a register and take corrective action when a product does not conform. If it presents a risk, inform the national authorities.
Several dates are approaching. The Machinery Regulation applies from 20 January 2027. The Cyber Resilience Act (CRA), Regulation (EU) 2024/2847, has reporting obligations from 11 September 2026 and its main obligations from 11 December 2027. Check the latest position in the Official Journal before you plan.
Key points
CE Marking Fundamentals takes you from the EU market rules to your first shipment, with templates and quizzes. Module 1 is free.
For most products, no. The Low Voltage Directive and RoHS allow only module A, where the manufacturer assesses conformity alone. A notified body is needed when the law requires it, for example for higher ATEX and pressure equipment categories, listed machinery categories, or radio equipment when harmonised standards are not fully applied.
The general rule is 10 years after the product has been placed on the market, unless the specific law says otherwise. The Machinery Directive, for example, counts from the date of manufacture or, for series production, from the last unit produced. Keep superseded revisions so you can show the file as it was for older units.
Yes. The CE marking says nothing about where a product was made, and the manufacturer affixes it after completing the conformity assessment. For products under the legislation listed in Article 4 of Regulation (EU) 2019/1020, an economic operator established in the EU must also be identified.
The EU declaration of conformity is the manufacturer's signed statement that the product meets all applicable EU laws. The CE marking is the visible sign of that statement on the product. One without the other is incomplete.
This guide is general training material, not legal advice. EU rules and standard citations change: check the latest texts in the Official Journal of the European Union before you decide.
What a CE marking technical file must contain: product description, risk assessment, test reports, supplier evidence, 10-year retention and version control.
When EU law requires a notified body: modules A to H, rules for LVD, EMC, RED, ATEX, PED and machinery, how to check NANDO and what a notified body issues.
What an EU authorised representative does, the Article 4 tasks of Regulation (EU) 2019/1020, mandate limits and how non-EU manufacturers choose an EU partner.
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