CE certification can be said that the world's most advanced product compliance assessment model, which first introduced the concept of modules, a CE mark for the assessment of the product by the evaluation module and the evaluation of these assessments module components. In general, the evaluation module are the following:

A: self-proclaimed (declared by the producers themselves, and provide key technical information products)

B: Type testing (by the European Notified Body for product fully tested)

C: Notified Body for the production of factory inspection

D: Notified Body for the production and inspection of the factory quality management system

E: The notified body for quality management system review of traders and other intermediaries

F: EU notified body landed against the import volume products review

G: Notified Body for EU imports of the product type testing has not yet been carried out a comprehensive review of the test, including the different types of instruction for which modules should be made a requirement assessment procedures. Such as: Low Voltage Directive (LVD), Electromagnetic Compatibility Directive (EMC) can be formed by the A; Gas Appliance Directive (GAD) by the BC, BD, BE or BF composition.