... acid and alkali and prevent aging4. Minimal maintenance cost and pure,saturated color, no Flickering, no UV, good for eyes, environment ... friendly.5. Unique patented heat sinking design6. Color: warm white, pure white, cool white, different color can be availableCompany advantages1. Professional ... with all the partners. FACTORY VIEW PICTURE:CERTIFICATES:PATENT CERTIFICATES: 2012 New 3w led ceiling