1.E27,E40,IP65 2.Working environment:-40--+50degree 3.OEM,special require accepted 4.5 Year warranty 5.Price advantage 1.shell is crafted for high quality aluminum,the surface smooth,flat;2.reflector imported high-purity aluminum reflective mateial,high effciency,small glare;3.corrosion silicone rubber seals,high temperature 250 degrees celsius or higher,goodsealing performance,waterproof, ...