... . 500,000hrs life span Product name: Led Light Boxes, Led Super-thin Light Boxes Place for usage: supermarkets, shopping mall, stores, shops ... .Using the newest breakthrough in technology, the Led light boxes offer bright, maintenance-free illumination, even in very large sizes! ... 420mm, 210*297mm, and customer size is also available.6. Super thin and ultra light weight, easy to carry, hangs on the ...