The author compared the product quality and preparation process of the polypropylene(PP) and polyethylene(PE) produced by CNPC and SINOPEC with the overseas products and advanced technologies in terms of catalysts, polymerization process and standards of the resins. The new opportunity for developing the polyolefin products in China and the challenge presented by the low-cost products from the Middle East competitors to domestic producers were summarized. It was proposed that the development emphasis of PE should be on specialty resins such as PE100 and PE125 grade for pressure pipes and large-scale hollow containers especially for auto fuel tanks in the period of the 12th Five-Year Plan. The key development directions of PP should involve high melt strength, high transparency, high crystallinity and high flowability PP resins, which were widely used in the fields of packages, automobiles, household appliances and architectures. The development of new PP products should be focused on PP composites used for internal and external fittings of automobiles, high value-added medical containers and substitutes for metal and engineering plastics, etc.%从催化剂、聚合工艺技术、产品质量和标准三方面分析了我国两大石化集团生产的聚丙烯(PP)、聚乙烯(PE)产品质量和生产工艺与先进技术和产品存在的差距,国内聚烯烃产品的新机遇以及中东等低成本产品对国内市场的挑战.提出了“十二五”期间应重点开发PE100,PE125级耐压管材专用PE树脂、大中空容器专用PE树脂,特别是汽车油箱专用PE树脂；重点开发高熔体强度、透明度、结晶度、流动性能的PP树脂,这些产品广泛用于包装、汽车、家电和建筑领域.PP新产品开发的热点主要包括可用于汽车内外配件、高附加价值医用容器以及可替代金属和工程塑料的PP复合材料等.
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