Slim Acrylic LED Light Box 1. CE & Rohs approved 2. Long Life Span&Reliability 3. Extra Large 4. Environmental Friendly Slim Acrylic LED Light Box♥ Product name: led light sign, light box, slim light box♥ Structure of single side crystal light box:♥ Material: acrylic panels, 5-10mm light guide panel (LGP), LED lights, etc;♥ Shape: round, square, irregular design shape;♥ Size: A0, A1, A2 A3, A4, ...