SDW-22-A waring board honey comb pattern high reflective material,long safe distance Name:SDW-22-A waring board Place of original:zhejiang china Brand:BODUN/OEM Model number:SDW-22-A Details:1,high reflective material,long safe distance 2,works both day and night 3,easy to stand4, accepted by South America, Mid East and Africa SDW-22-A waring board