SANSI's rugged hollow housing design, premium LED chips and patented ceramic heat dissipation technology ensure excellent heat dissipation and long-lasting performance, the lamp body is made of special ceramic material, with a flame retardant grade of V0, reinforced insulation structure, no danger of electric shock, safer, the overall shell material reaches WF2 anti-corrosion grade, more reliable and durable, this light bulb offers flicker free, no glare, no humming, no light decay, ideal for desk lamps, wall lamps, floor lamps, open fixtures. ETL certified, flicker Free, no glare, no humming, excellent heat dissipation, no light decay, Since they are made especially for refrigerators, these bulbs are waterproof. You never need to worry since the fire-retardant PC cover ensures no shattering.