Hot sale sign boards for shops Letter material: 304 stainless steel face and return,pc backer. Usage: Outdoor Power:Input:110-240V AC,Output:12VDC Size:350mm tall Style:LED back lighting Certificate:CE,UL Finish:powder coating ONLINE SERVICE SKYPE:luyanfeihelen LED back-lit Stainless steel Signs is the common type of illuminated signs; it can be very good to show the contours of the sign even in the night. Basically, light passes through the back of the sign causing it to light up at night. Found in 2005, Dragon Signs Technology Co.,LTD is specialized in manufacturing, designing and developing outdoor LED signs ,metal signs etc, we are a UL Certified sign manufacture in china.