REACH Article 33 requires all suppliers to inform their customers if the product they supply includes any article which contains any of the substances in the Candidate List in concentrations > 0.1% w/w of the article. An article is any item which has a special shape, surface or design which determines its function to a greater degree than its chemical composition (e.g. a screw, resistor, wire). Please note that this definition of an article may apply to individual components in your product. For further guidance on what is considered an articleunder the REACH Regulation please refer to the ECHA Guidance documents.