... production. Our product range is road studs, road signs, and traffic signs.traffic led solar road stud Features:1.Compressive strength index:30tons; ... Temperature range from -25°Cto +75°C5.Light source :High intensity LED ,LED quantity :4pcs .Color :Red, yellow ,blue, green ... time in frequency flashing condition > 108h 6.ABS and high optical opacity polycarbonate ; Resistant to corrosion: Water proof ...