collision prevention pier 1> Main material: LLDPE 2> Common color: orange, blue, green, white or black. 3> Uniform wall thick The features of our Turn-angle Collision Prevention Pier (road block) are as follows:<1> Main material: imported environmental PE raw materials, imported pigments and additives. <2> Common color: red/white or red/yellow connection with the use (also van be made into cement ...