For the US market, products must have UL or ETL certification and comply with Energy Star requirements. For the EU, CE, RoHS, and ErP (Energy-related Products) directives are mandatory. Key technical specs include multi-speed control (at least 5-6 speeds), reversible function for summer/winter use, and voltage compatibility (110V-240V) to match the target region's power grid. If the fan includes LED lighting, ensure the CRI (Color Rendering Index) is >80 and supports CCT (Color Temperature) switching.