RoHS obligations are implemented in national law. Article 23 requires Member States to set effective, proportionate, and dissuasive penalties for infringements.
Market surveillance authorities can request your Declaration of Conformity and technical documentation, sample products, and coordinate corrective actions when non-compliance is suspected.
Regulation (EU) 2019/1020 is a core cross-cutting enforcement framework for EU product compliance; expect documentation requests to be time-bound and specific to a model/configuration.