Unidirectional Solar Road Stud Light Factory-NOKIN Solar . Unidirectional Solar Road Stud For Urban Road-Nokin Motorway 1.Die-aluminum body. The original cat eyes road stud was with a plastic body, but for led solar road stud, the die-cast aluminum road stud is the main trend which It has the characteristics of anti-aging,anti-corrosion,anti-ultraviolet rays, etc., its compression resistance is