Core Viewpoint - The first batch of five 9000-ton air membrane grain silos in China has been successfully inflated and formed, marking the practical application of the fourth generation of new grain storage technology [1][3]. Group 1: Technology and Design - The air membrane silos are inflated like balloons, with a diameter of 24 meters and a height of 33 meters, capable of storing 9000 tons of grain, sufficient to meet the daily food needs of 23 million people [3]. - The construction process involves a significant pressure difference between the inside and outside of the silo, requiring a two-door system for entry, ensuring safety during operation [5]. - The interior of the silo is spacious and column-free, allowing for higher space utilization, with grain being delivered through a conveyor belt from the top [7]. Group 2: Safety and Monitoring - The silo walls consist of an air membrane layer, a reinforced concrete layer, and an additional polyurethane layer for insulation, ensuring the safety and longevity of the storage [9]. - The silos are equipped with numerous sensors for real-time temperature monitoring of the grain, and nitrogen gas is injected to create an oxygen-free environment, preventing pests and preserving the grain [9]. Group 3: Construction Timeline - The entire construction process is highly mechanized, environmentally friendly, and minimally affected by weather conditions, significantly shortening the construction period [7]. - The completion of these air membrane silos is expected by the end of this year, with operational use planned for February next year [9].

Group 1 - The core viewpoint of the article highlights the practical application of China's first batch of five 9,000-ton gas membrane grain silos in Changsha, Hunan, marking the entry of the fourth generation of new grain storage technology into practical use [1] - Gas membrane silos significantly enhance the airtightness and thermal insulation of grain storage compared to traditional silos, which are primarily made of reinforced concrete [1]