... Brightness LED lights source 3)Save energy light box 4)CE,ROHS, Description:a) LY crystal ... and the Aluminum snap open frame light box can be made singled-sided and double-sided ... .b)The single-sided light box is made by 3 layers high quality Acrylic ... can change pictures effortlessly.d)safe, environmental-friendlyThe product is waterproof, explosion-proof, low heat, environment- ...