test center consists of a chemical room, a mechanics room, a fatigue test room, a metallographic room, a metering room, etc. It has the ability to carry out full performance inspection on various materials and springs, and residual stress test, including alternating test, salt spray test and fatigue test on the coating surface. The testing conditions conform to European and North American automobile industry standards. In 2016, it passed the laboratory certification of China National Accreditation Committee for Conformity Assessment, with CNASL8434 registration number and third-party testing accreditation.