The "Flexible Speaker" technology, co-developed by the Yan Chen Technology Co.Ltd team led by student Li Yan-chen from the Graduate Institute of Electrical Engineering at Chung Hua University and laboratory professors, has subsequently been designed with a light and thin appearance, making the speaker as thin as a sheet of paper, which is also known as a "paper speaker." This technology can be applied to manufacture various toys and audio/electroacoustic products, such as wearable speakers, portable lightweight audio systems, and smart speakers integrated with the Internet of Things (IoT); it can also be used for large-scale venue layout products, such as hidden speakers, speakers attached behind picture frames for tour guide purposes, and ultra-thin large audio systems. Its potential applications are highly diverse, offering extremely high added value. Currently, this key technology has successfully obtained invention patent certificates in Taiwan, Mainland China, and the United States, and is currently undergoing commercial application. The team also continues to innovate and think creatively, expanding the application of this technology to "wireless charging" and "noise power generation."