亚洲w码欧洲M码kkk15,久久日本手机在线视频,国产高清免费高清不卡,日韩中文有码二区,91嫩草 一区二区 在线免费观看,日本天天综合网,夜夜草成人网站,无人区乱码一线二线久久久久 ,人人视频精品,七七女神黄色网站,日韩亚洲天堂,亚洲国产成人久久午夜,日韩国产中文字幕在线观看,国偷自愉自产产区91区,在线囯产电影,91在线无码精品秘 国产,国产精品秘 入口麻豆MV

 

We buy a good quality LED Tube, you have to select a good cost LED fluorescent several parameters need to know

1: Luminous brightness
    A Philips brand 46W (with rectifier power) fluorescent light is about 1600LM, made a?‹a?‹of 1400-1500LM.

2: Power

    Know brightness, you have to ask about power, the same brightness, the smaller the power, the higher luminous efficiency, energy-saving, the better. Ordinary 46W fluorescent lamp, 15W-LED fluorescent lamp can be completely replaced.

3: LED chip brand

    LED chip direct relationship to the life of the LED fluorescent light fades, the LED chip production base worldwide, 80% are concentrated in Taiwan, more famous chip wafer manufacturers, Chi Mei. Domestic several LED chips, cheap, brightness almost than with Taiwan, but the quality stability is no way than with Taiwan.



4: LED drive power

    LED drive power is equivalent to the heart of the LED fluorescent lamp, with the poor, lamp light a few days to hang it. A good LED power should achieve greater than 90% efficiency, power factor greater than 0.95, are long-life electrolytic capacitors used in high temperature domestic brands (electrolytic capacitor life of more than 8000 hours, temperature 105 ° called long-life products, electrolytic capacitor life depends on the use of the environment, every 10 ° temperature drop, double its service life)
  These parameters are optional LED Tube factors you have to consider?