... plastics (PA + PE); LZJ-CHS-10 Road stud Road block LZJ-10/8 is 10m or 8m road block(tire deflation) which is made of ... product 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 the ...