The writing surface of LED Signs is made of ultra-hard abrasion resistant Japan imported acrylic board which is anti-scratch and highly transparent. The ability to use fluorescent pens for special message is convenient as the board is strong enough to withstand frequent writing and erasing. The base of the LED Signs is made of durable but light-weight alloy which makes it safe and convenient to hang or to put on an easel.
More information read http://www.aliexpress.com/store/103257
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