... Road stud:Made of high strength,high toughness of engineering plastics (PA + PE); LZJ-CHS-10 Road stud Road block LZJ-10/8 is 10m or 8m road ... is safe and effective pre-assembly, recycling, free expansion, road coverage, adaptability, light weight, portable, easy to use features ... . Police officers while on duty, obstacles on the road to effectively intercept the suspect vehicle, the control of ...