Core Viewpoint - Tianyi New Materials (688033.SH) maintains close business cooperation with Rainbow Drone and Tengdun Drone, focusing on the development of carbon fiber prepreg materials for EVTOL applications [1] Group 1: Business Cooperation - The company’s subsidiary, Beijing Tianrendao New Materials Co., Ltd., continues to collaborate closely with Rainbow Drone and Tengdun Drone [1] - No new cooperation projects have been initiated between Tianrendao and Times Technology in 2024 so far [1] Group 2: Product Development - In 2023, Tianrendao developed a medium-temperature toughened carbon fiber prepreg, which has completed multiple batches of allowable value verification for EVTOL-specific applications [1] - The carbon fiber prepreg has been applied in the complete aircraft of Times Technology's E20 model [1]

Core Viewpoint - Tianyi New Materials (688033.SH) maintains close business cooperation with Rainbow Drone and Tengdun Drone, focusing on the development and application of carbon fiber prepreg materials for EVTOL aircraft [1] Group 1: Business Cooperation - The company’s subsidiary, Beijing Tianrendao New Materials Co., Ltd., continues to collaborate closely with Rainbow Drone and Tengdun Drone [1] - No new cooperation projects have been initiated between Tianrendao and Times Technology in 2024 so far [1] Group 2: Product Development - In 2023, Tianrendao developed a medium-temperature toughened carbon fiber prepreg, which has completed multiple batches of allowable value verification for EVTOL-specific applications [1] - The carbon fiber prepreg has been applied in the complete aircraft of Times Technology's E20 model [1]

Group 1 - The core business growth area for the company is high-end composite materials and structural components for low-altitude flying vehicles [2] - The company's subsidiary, Beijing Tianren Dao New Materials Co., Ltd., maintains close business cooperation with Rainbow Drone and Tengdun Drone [2] - In 2023, Tianren Dao developed a medium-temperature toughened carbon fiber prepreg, which has been validated for multiple batches and applied to the Shanghai Shide Technology E20 aircraft [2] Group 2 - As of 2024, there are no new cooperation projects between Tianren Dao and Shide Technology [2]