.Material of writing area:Hing-Hardness Abrasion resistant PMMA board. 7 color circle and single color adjusted Material of Screen: High-Hardness Abrasion resistant PMMA Arylic Frame: Aluminum alloy. LED: 7 color circle and single colorHuaqi Technology’s LED writing board are the most cost performance ratio at china. Passed CE. ROHS, FCC certification. with patent at design, patent number ...
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