展会时间:2007-07-11 至 2007-07-13
我国国民经济的快速发展,导致对能源需求巨增。随着近期石油价格暴涨,交通领域的成本也在激增。寻找替代石油的新能源尤为迫切。电动自行车绿色环保、经济便捷, ...
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