Core Viewpoint - The successful factory acceptance of the first domestically produced 450,000 tons/year polypropylene blending extrusion granulation unit by Dalian Heavy Industry marks a significant advancement in China's equipment manufacturing capabilities, particularly in the petrochemical sector [1][2]. Group 1: Equipment and Technology - The 450,000 tons/year polypropylene blending extrusion granulation unit has passed all performance tests and meets design requirements, showcasing its advanced layout and quality [1]. - The unit's standard load capacity is 56.5 tons/hour, with a maximum load capacity of 67.5 tons/hour, placing its overall performance among the international advanced ranks [2]. - The project team overcame multiple technical challenges over 14 months, achieving autonomy in key technologies such as high-torque transmission stability and high-temperature, high-pressure melt precision blending [2]. Group 2: Strategic Importance - The Tarim 1.2 million tons/year ethylene project is a demonstration of China National Petroleum's commitment to green low-carbon development and high-value resource utilization [1]. - The successful acceptance of this unit signifies a historic breakthrough in the design, manufacturing, and integration of large-scale blending extrusion granulation equipment in China, transitioning from a "follower" to a "runner" in the industry [2]. - The project supports the national strategy for major equipment autonomy and domestic production, providing a foundation for future large-scale ethylene and polypropylene project construction [2].