European Union and UK
CE marking for electrical safety and EMC, RoHS for restricted substances, and UKCA for Great Britain. Battery products also need UN38.3 for transport.
United States
FCC for electronic emissions. For devices sold with wellness or medical claims, plan FDA establishment registration and device listing under the right product code.
Other markets
Australia and New Zealand use RCM. Many marketplaces also ask for test reports and product liability insurance.
What to ask your factory
Request the full test reports with your model number, not just certificates. Confirm who the applicant is and whether reports can be reissued under your brand.