1. Introduction
New electronic products, especially consumer electronics are continually being introduced into very fast in today's society. It is easy to find out how many new versions of consumer electronics, such as mobile phones and digital cameras, are developed and developing every year. Producers and designers tend to use novel and updating technologies, designs and features to appeal users and stimulate consuming. The old generation can be easily changed by the new generation and becomes some kind of waste. [1] However, that how to deal with these wastes and where they can go are the inevitable questions to us.