1. High brightness SMD3528 chip 2.Optical-grade light guiding board and light board 2 white, biue, red, green are optional LED high ... loose parts, there is no filament burn, thermal deposits to light, light failure shortcomings, such as fast, with lifetime 50,000 to ... .LED the environmental protection:LED is a kind of green light source, environmental protection is more effective. No ulraviolet and ...