目前全世界拥有自行车13亿辆，年产量为2亿辆。随着各国的环保意识日益提高，无污染和低噪音的电动自行车已成为人们代步、健身和休闲用的自行车的升级产品。电动自行车业方兴末艾，具有巨大市场开拓潜力。美国尤尼克公司去年年中时决定，将于今年6月推出新型电动自行车，目标 At present there are 1.3 billion bicycles in the world and the annual output is 200 million. With the increasing awareness of environmental protection in various countries, pollution-free and low-noise electric bicycles have become upgraded products for people’s bicycle, fitness and leisure bicycles. Electric bicycle industry Hing end Ai, has a huge market potential for development. US Unocal company decided by mid-year last year, will be launched in June this year, the new electric bike, the goal