Aluminum alloy road barrier:Made of high strength,high toughness of engineering plastics (PA + PE); Aluminum alloy road barrier LZJ-CHS-A10Road block LZJ-10/8 is 10m or 8m road block(tire deflation) which is made of aluminum alloy.The spikes is using rigid die-casting zinc alloy;this product has a pre-assembly,recycling,free expansion,safe and effective,adaptability strong,light weight,portable, ...