... ♣ Poster: easy to change the posters, only need to open the advertising screws.♣ Voltage: 110-240v.♣ Pro-environment: low ... , blue, purple, orange, pink, clear etc.♣ Light source: LED lights (light on 2/4 sides)♣ Specification: customized according to ... Widely used in business center, indoor decoration,chain stores,corporate signs, business center, supermarket,airport,railway stations, subway, banks, ...