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REACH – Substance Information Exchange Forum (SIEF)

If you have pre-registered a substance then you will be part of a Substance Information Exchange Forum (SIEF). The UK Competent Authority is not involved in the operation of SIEFs; however this leaflet is a starting point to help you understand things you should consider when operating within a SIEF.

REACH – Substance Information Exchange Forum (SIEF) [PDF 111KB]