For the European market, the machine must have a CE Certification to ensure it meets safety, health, and environmental protection requirements. For the US market, UL or ETL listing for the power adapter is highly recommended. Ensure the product complies with RoHS (Restriction of Hazardous Substances), especially for the plastic components and solder used in the motor assembly. Additionally, verify that the voltage and plug type (e.g., 110V US vs 220V EU) are compatible with your target market's electrical grid.