... certification 50000hrs lifespan 15W SMD LED downllight/LED ceiling light/ LED recessed lamp specifcationProduct Name15W LED ceiling lightColor temp ... LED spotlights,LED strips,LED downlights,LED flood light,and other indoor or outdoor lighting,more questions,pls contact me ... , Office work station3. Back lighting, Step Lighting, Light boxes4. Merchandising, Exhibition stands and panels Installation: