<span id="n59pf"></span>
<strike id="n59pf"></strike><strike id="n59pf"><i id="n59pf"></i></strike>
<strike id="n59pf"><dl id="n59pf"></dl></strike>
<strike id="n59pf"></strike>
<span id="n59pf"><video id="n59pf"></video></span>
<strike id="n59pf"></strike>
<strike id="n59pf"></strike>
<span id="n59pf"><dl id="n59pf"></dl></span>
<strike id="n59pf"></strike>
<span id="n59pf"></span>
<th id="n59pf"><video id="n59pf"><strike id="n59pf"></strike></video></th>
<span id="n59pf"></span>
<strike id="n59pf"></strike>
<span id="n59pf"></span>
<progress id="n59pf"><video id="n59pf"><strike id="n59pf"></strike></video></progress>
<strike id="n59pf"><i id="n59pf"></i></strike>
<span id="n59pf"><video id="n59pf"><strike id="n59pf"></strike></video></span>
<span id="n59pf"></span><strike id="n59pf"><i id="n59pf"></i></strike>

Definition and characteristics of LED energy-saving lights

2014-09-17 40

LED lights (Light Emitting Diode, light-emitting diodes) that semiconductor lighting. It is based on the structure of a semiconductor with a small PN power solid state light sources can emit light efficiently. LED lights with high pressure sodium lamps do not practice the same, the choice of high-power LED street light low-voltage DC power supply, the power-type GaN-based blue LED and yellow phosphor composition of efficient white LED, high efficiency, safety, energy conservation, environmental protection, life long, echoing speed, higher CRI unique strengths, can be widely used in urban road lighting.

Recommended news
又粗又硬又黄又爽免费的视频_影音先锋AV网站_善良的翁熄日本中文字幕_日本公与熄乱理在线西瓜