For manufacturers and importers of a substance:
If a substance is manufactured or imported or if a substance or several substances in formulations are imported in quantities of more than one metric ton per year, then a European manufacturer of electronic components has the same obligations as a manufacturer of a substance.
For manufacturers of articles:
There are basically two obligations. If more than one metric ton per year of a substance is intentionally released from the article, then that substance must be registered, if this has not already been done by a third party. If the article contains a substance of very high concern (SVHC) as published per REACH Candidates List above 0.1 percent per product weight, the manufacturer must provide the customer with information sufficient for the safe use of the article if available. As a minimum requirement, customers must be notified of the name of the substance (see also REACH Candidates List). From June 1st, 2011 on and under certain circumstances the ECHA must be notified with in 6 months after publication of the revised candidate list as well.