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Abbreviation for ED light emitting diode. In PN junction of some semiconductor materials, when a few carriers are injected and most carriers are combined, the excess energy will be released in the form of light, thus converting electric energy directly into light energy. Pnjunction and reverse vo...

As a widely used light box product, ultra-thin light box has the following characteristics: 1. The ultrathin light box has the characteristics of exquisite appearance, ultrathin and ultralight

1. Combined light box: the appearance of the light box is hyperbolic, and the light box is not fragile. The combination light box can be pasted with film, printed with silk, etc. It can be hung on the site, on the side or by hanging.