The EU has introduced a CE marking system to facilitate and reduce trade between EU countries. This means that the manufacturer claims that its products meet the minimum legal requirements for health and safety in accordance with EU directives.
The big advantage for manufacturers is that few requirements and procedures need to be observed in the design and manufacture of products throughout the EEA. You can consider the CE marking after brexit to ensure your product has been assessed by the manufacturer and deemed to meet EU safety, health, and environmental protection requirements.
Various conflicting national regulations have been removed. This means that products no longer have to adapt to the specific requirements of different EEA member countries.
When your product has the CE mark, you'll find that importers, distributors and sales agents are easier to find because they don't have to deal with complicated compliance regulations. You won't want to deal with product certification, which requires complex work experience.
The CE marking can only be affixed to products used in accordance with certain Community harmonization laws, but not to other products. The CE marking is the only marking that certifies the conformity of the product with the applicable requirements of the relevant harmonization legislation of the Community for its affixing.