The constant oil price rise in the international market in recent years has directly or indirectly triggered a drastic price rise of all commodities worldwide and in turn led to a global cost increase of raw materials. In the chemical fiber sector,raw materials hold a very high proportion in the production cost. For example, in polyester fiber PTA and MEG account for more than 80% of the production cost and in viscose fiber pulp also accounts for more than 60% of the production cost.