... , mud and snow pattern, etc.Tires certificate DOT, ECE, GCC, S-MARK. ISO, INMETRO, BIAS , SONCAP etc.Place of OriginShandong , China (Mainland ... certificate: DOT, ECE, GCC, S-MARK. ISO, INMETRO, BIAS , etc.5. Advanced technology and machinery with selected raw material and strictly controled production ...