QINGDAO PUREGAIN TYRE CO.,LTD. have passed ISO9001:2008 quality management system(No.10413Q21076R0S) earlier and the safety certificates(No.0752016P0015R0M & No.072016P0014R0M) of products. The laboratory testing equipments passed the authoritative certficate of China Association of Measurement to ensure the impartiality and truthfulness of testing data.