... good choice for your safety high duration UL and NSF61 prompt delivery Rubber Speed Hump,Safe Road Material:NR high and low temperature resistance ... ISO/TS16949 OEM1. Name:Rubber seep hump2. Material:NR,SBR,SIL,NBR,etc3. Application: road, parking-lot, quay,Safety brake equipment and more4 ... Strength, %60%82.9%2) Retention of Elongation, %60%95% Rubber road cone