Short answer
This answer explains is china rohs the same as eu rohs? in practical terms: the trigger to check, the evidence to keep, and the follow-up decision that should be owned before launch or change approval.
Use EU RoHS technical files as inputs only after checking China product scope, marking/disclosure, supplier evidence, and catalogue status.
Use for electrical/electronic product scope, hazardous-substance control duties, marking and disclosure, environmental protection use period, catalogue/conformity assessment context, enforcement, and 1 July 2016 effective date.
Use for EU RoHS restricted-substance scope, technical documentation, EU declaration of conformity, CE marking, and EU market-surveillance comparison points.