Extremethin light box - unfoldable frame

1) Unfoldable frame, easy to change picture
1) Even luminescence, soft light
2) Silver-gray aluminum frame, simple and elegant appearance
3) Extreme thin: 2.8cm
4) Low power consumption: 60% less than traditional light box
5) Easy to assemble and maintain
6) Low heat generation: light panel doesnt generate heat by itself, that avoids the heating to the AD print and rapid aging of AD print
7) Long longevity of lighting tubes: up to 12,000 hours