1.Strictly according to IATF 16949 quality certification system process production.    2.Using imported CR rubber, ensure the product is resistant to ozone aging and weather aging at the same time and has heat resistance: working temperature up to 98°C, oil resistance, electrostatic conduction, flame retardant effect.                      3.Combustion speed and combustion products meet European ROSH environmental requirements.                       4.The low-denier, high-twist and high-strength cord cloth developed makes the sac thinner, with higher flexure resistance, lower heat generation and better puncture resistance.                                                         5.only produce Brand New & real ADS air spring strut products.  When you choose supplier, we suggest you to buy try order to test their quality.