... Light source: low power SMD LEDs (placed in the edge of the plate)Quick response when power on , no noise, no ... strobe light, no pollution;Lightguide material:Al-alloy shell, High thermal conductivity Color: Single color,bi-colour, RGB; (various colors available) ... CE, RoHS & ETL approved, with 2 years quality warranty.Package of LED ceiling light :A,DescriptionIndividually package for each LED panel ...