Certi: ISO/ TS16949 Name:auto rubber shock bumper Material : EPDM, NR, IIR, CR,ect SHA:50A-80A ... .S.A and JIS of Japan Name: auto rubber shock bumper,rubber to metal damper,car shock absorption Material : CR, EPDM, NBR,SBR, FPM ... can produce & design aaccording to detailed drawings or samples auto rubber shock bumper