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Today, the topic about energy conservation and environment protection has already caught our attention. Let’s do it from little thing. This is a multi-fonction eraser. We can use it as a eraser but also a pencil. Furthermore ,it can protect pen refill. By the way, it can put with the pen together, so we won’t lose pen anymore. When the pencil gets shorter, it will extend the service life, in order to save the energy. We can call this magic eraser as “Ma liang”, which is the name of a famous painter of Chinese myth.