All steel radial tyres and bias tyres with high performance and good quality can meet a lot of customers requirements. Materials usd for improving the tyrs quality are all from very famous companies such as natural rubber from Malaysia, carbon black from Cabot Corporation and steels from Bekaert, two different construction¡ªzero degree belt and four belts¡ªsuitable for heavy load and highway application. And the all-series of tires passed the ISO9001-2000 quality system certification, China compulsory certification, ISO/TS16949, DOT and ECE-Mark.