... luminous efficiency of the economical RX-ALF3528 Series LED panel plate, High efficiency energy-saving environmental ... ultra-thin, waterproof advantages. Mainly used for advertising light box backlighting, signs. Especially suitable for metro,stations, ... 5LM / LED whiteChina Patent No.: ZL200820131053 ZL200820132702Scope of application:Apply to lighting, backlight application,advertising light box, ...