Sunwin electronic ( www dot sunwinelect dot com)is a high-tech corporation which specialize in Light Emitting Diode (LED).Now we have Anti-attenuation LED. tested for 1000 hours in 20mA current, no attenuation. it's advance in led tube/ led lamp/ led light..we have other model LED:1. sharp: Oval LED, Round LED, Flat LED, Rectangle LED, Bullet LED, Strawhat LED, Helmet LED, Concave LED, RGB LED, all in specification is 3mm, 4mm, 4.8mm, 5mm, 8mm, 10mm etc. 2. color: Green, Red, white, blue, yellow and seven-color lights, RGB and so on.Application: electronic device indicators, Mouse, portable equipment , indoor/outdoors message display, traffic signal lights and automotive use