... hazardous materials.2,high light efficiency, 90% of the electronic energy transfer into visible light.3 ... not easy to broken.5,Systematic design of lens and lamp cover.6,Lens with both a protective ... effect avoid light loss, so that makes the lamp more concise and beautiful7,No twinkle, soft and ... traditional light source, and is the protection of human eyesight and physical health.8,Luminous efficiency ...