The flat piece of hard plastic (acrylic) characters after heating to soften the roof design, using vacuum to advance with the three-dimensional sculpture carved wooden molds shaped surface good. After cooling milling, engraving and milling, grinding, using aluminum (or iron) edging, surface cover made of words. The front cover of the well into the metal plate (it can be aluminum, stainless steel) on the outline of the word carve. According to the outline of a curve sawing a font, and then around the edge welded metal sideband with, made the word slot. Color decay very quickly: just install a good word luminous color emitted pure bright characters roof signs, colors can be used to significantly less than a year dim down. Font becomes red is not red, not green, green is very ugly. Workaround: LED lamp is generally safe to use the current 20 mA, more than this value, although the brightness will increase some, but the color will be significantly accelerated decay. Therefore, removal of the roof of the characters, at the time of purchase has been assembled LED modules must test its output current. Less than 20 mA bright enough, more than 22 mA of LED life, so that the color decay faster. Characters roof construction | LDX advertising (certified) | Qingxu County, Shanxi DS roof characters provided by Xuan Culture Media Limited. DS Shanxi Xuan Culture Media Co. (www.sxdxzs.com/)(http://www.sxdxzs.com) is Taiyuan, leading advertising service over the years, the company implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. In LDX advertising leadership with the staff warmly welcome all inquiries negotiations to create LDX advertising a better future. You can also access (http://www.sxdxzs.com/supply_details_37513497.html), for more information about the company.