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As people's environmental protection awareness increases, more attention is paid to the topics such as global warming, and bicycle has become a symbol of environmental protection undoubtedly.While the number of the bikers grows, the safety of the bikers is taken seriously. Just like a dyno torch, you can use the handbrake of bike to generate electricity by transforming the wasted energy from braking in daytime to provide illumination for the lampsin the night. The cycle is both environment-friendly and safe.
Yen Kuo Tsai Ping Yuan