Abstract: The development of the polyolefins industry at the period of Eleventh Five-year-plan was reviewed. Domestic supply and demand of polyolefin at the period of Twelfth Five-year-plan were analyzed and predicted. It was pointed out that production capacity of polyolefins in China will be increased significantly and market demand will keep a steady growth. Large-scale industrial device of polyolefins will be developed to meet the increasing demands.

Key words: polyolefin, polyethylene, polypropylene, twelfth five-year-plan, supply, demand