In recently three months,an increase in oil price kick off a new round of inflation in USA,southeast Asia,,China etc.And also ,the oil shortage drove up the prices of rubber material on the world market.

The Olympic Games 2008 are coming nearly ,China government shut down the chemical factory round the Beijing 300km ,causing the price of substance for rubber extrusion like carbon etc go up sharply,In the beginning of 2008,it charged RMB 4000 per ton,however it go up to RMB8000 per ton,fully doubled its value.

Over the past four years, the exchange rate of the Renminbi has appreciated 44 percent.All those factor speed up the price increasing on the rubber extrusion.