Core Viewpoint - The successful launch of the experimental satellites 01 and 02 by the Long March 2D rocket marks its 100th flight, establishing it as China's second rocket model to surpass 100 launches, showcasing advancements and innovations in the rocket's development [2] Group 1: Rocket Development and Innovations - The Long March 2D rocket, developed by China Aerospace Science and Technology Corporation's Eighth Academy, has become a key model for launching payloads into low Earth orbit and sun-synchronous orbit since its first flight in 1992 [3] - Recent innovations include a shielding structure and system designed to suppress interference, enhancing the stability of wireless signal transmission during parallel testing of multiple rocket models, improving testing efficiency by over 30% [3] Group 2: Satellite Support Technology - The development of a composite material support cabin has reduced the weight of the support structure by 20% compared to similar metal materials, addressing the need for weight reduction as satellite payloads increase [4] - The technical team has optimized the curing process and pressure transfer paths to improve the performance and weight of the support cabin, enhancing the rocket's adaptability to various payloads [4] Group 3: Product Series Development - The satellite fairing sizes vary for each Long March 2D rocket launch, with a focus on developing a series of products to accommodate different payload dimensions, expanding the fairing diameter from 2.9 meters and 3.35 meters to 3.8 meters and 4 meters [5] - The integration of a co-curing process for the fairing's sandwich structure has improved production efficiency by over 20%, ensuring the products meet temperature resistance and wave transparency requirements [5]