What information should I ask my supplier located outside the EEA for?
Change of supplier: determining who is responsible for marketing under REACh regulations

If your supplier is not based in the EEA, they are not subject to REACH regulations. As the importer, you are responsible for fulfilling the obligations related to placing the product on the market. As a reminder, under REACH regulations, importation is considered the first placing on the market.

Your obligations under the registration procedure will depend on your annual import volume. Reaching the threshold of one ton per year triggers obligations that must be met in order to continue importing.

In some cases, importing a substance into the EEA may not constitute placing it on the market (see “Importing a substance into the EEA: determining who is responsible for placing it on the market”