Article 25 starts with the category of machinery or related product. If the product is not listed in Annex I, the default route is internal production control, module A, in Annex VI.
Annex I Part A is different: the manufacturer must use one of the notified-body routes listed in Article 25(2). Those routes are EU type-examination followed by conformity to type, full quality assurance, or unit verification.
Annex I Part B sits between those positions. Internal production control is available only when the product is designed and constructed according to harmonised standards or common specifications that are specific to that category and cover all relevant essential health and safety requirements. If that condition is not met, the manufacturer must use one of the notified-body routes in Article 25(3).
The manufacturer makes and records this route decision. An importer must verify before placement that the manufacturer completed the appropriate assessment, prepared Annex IV Part A documentation, affixed CE marking, and supplied the required documents. A distributor must act with due care and check the marking, documents, identification, and operator details before making the product available. These supply-chain checks do not transfer the manufacturer's design and assessment responsibility unless Article 17 or Article 18 applies.