B2B buyers must ensure products meet regional safety certifications to avoid customs seizures. For the US market, UL or ETL listing is critical for fire safety, while the European market requires CE and RoHS compliance to ensure the absence of hazardous substances. Technically, you should verify the Luminous Efficacy (lm/W) to ensure energy efficiency and check if the LED chips are from reputable brands like Cree, Osram, or Epistar, which significantly impacts the lifespan (typically 30,000 to 50,000 hours).