1.Certification: TS16949 2.Gas filled/oil filled 3.Enstrengthed make the suspension lower, cool,and high performance ISO9000:2000 & TS16949 certification, more than 20 models,mainly export to European, South America , East AsiaGas filled/oil filled, and enstrengthed shock absorber tube,makes the suspension lower, cool,and high performance Our company is one of the largest shock absorber ...