... than light boxes light boxes together 4.Neat and beautiful double face crystal led light box Advantages:1. Ultra Slim ... desktop4. Long service life--80,000-100,000 hours5. Double high definition display6. The vertical hanging innovation show7. More ... , café, retail stores, shopping malls, bookstores, bars, nightclubs, supermarkets, window display, to promote new items or discount items.2. Festivals ...