Compliance is non-negotiable for cross-border trade. For the European market, products must adhere to EN 14619:2019, which specifies safety requirements and test methods for roller sports equipment. For the US market, ensure compliance with ASTM F2264-14. It is critical to request CE, RoHS, and REACH certificates from the supplier to ensure the materials used (especially grips and coatings) are free from hazardous substances. Always ask for a Third-party Lab Test Report (e.g., from SGS or TUV) to verify the maximum load capacity, which should be at least 100kg (220lbs) for pro-level scooters.