When sourcing from China, prioritize products that meet international safety and performance standards. For charging cables and power banks, ensure CE, RoHS, and FCC certifications are provided to guarantee electrical safety and environmental compliance. For screen protectors, verify the 9H hardness rating and oleophobic coating quality. If purchasing power adapters, confirm the use of GaN (Gallium Nitride) technology for higher efficiency and heat dissipation. Always request third-party lab test reports to validate battery capacities and data transfer speeds.