Huaqi Technology are developer and Manufactuer of LED writing board. we have 2 years experience of manufacturing this products. 
Our LED writing board passed CE. Rohs certification, FCC. UL. CE for adatper. it is famous in Spain, Japan. France. Egypt etc market as knowing number as HQ638. HQ584. HQ438. HQ338, HQ790 etc.
Our LED writing board has the most stable quality than other chinese dealler.
It composed with Stylish Aluminium alloy frame. only 1.5cm deepth. the writing area is high-hardness PMMA board  it is 100% anti-sracth. The LED strip is waterproof high brightness 7 color. it could be light for over than 5 years.  The controller box is the soptlight of our products, it is a separately devices with USB plug. it control your led writing board as 7 colors. 9 kinds of sparkling model. 3 type of flash speed. nowdays there are a lot of chinese trader use our products photo for on-line promotion, but the product the sell is totally different and low quality. we wish you pay more attention to their products while your communicationg with them.
our website is www.ledwritingsigns.com