Group 1 - The Aerospace Science and Technology Corporation's Sixth Academy has supplied 576 products including air heaters, material heaters, steam ejectors, high-speed pumps, reactors, special valves, plunger valves, breathing valves, flame arresters, and safety valves to support the commissioning of the world's largest integrated olefin production base located in Fujian Province by Zhongjing Petrochemical [1][3] - Zhongjing Petrochemical's integrated olefin production base consists of three propane dehydrogenation units and four polypropylene units, achieving an annual production capacity of 2.8 million tons of propylene and 3.8 million tons of polypropylene, with a domestic production rate of 99.5%, significantly contributing to the independent innovation of China's high-end petrochemical industry [3] - The products provided by the Aerospace Science and Technology Corporation play a crucial role in ensuring the safe, stable, and efficient operation of the entire facility by serving as key equipment for heating materials and regenerating air, providing high vacuum environments, transporting and controlling process media, balancing tank pressure, preventing flame propagation in case of accidents, and avoiding equipment overpressure [3]