自行车轻巧灵活,在我国广大城乡家庭中成了不可缺少的交通工具。它具有节能,无污染,售价便宜,存置占地少等优点,重视和研究提高自行车的质量,是深受人民欢迎的。解放后三十多年来,我国自行车工业有了很大的发展。上海的永久、凤凰和天津的飞鸽牌自行车,都建立了一定的信誉,还出口到东南亚若干国家。但与先进工业国家的产品相比 Bike lightweight and flexible, in the vast majority of urban and rural families in China has become an indispensable means of transport. It is energy saving, pollution-free, cheaper prices, less storage space, etc., attention and research to improve the quality of bicycles is well received by the people. More than thirty years after the liberation, China’s bicycle industry has made great progress. Shanghai permanent, Phoenix and Tianjin Feige brand bicycles, have established a certain reputation, but also exported to several countries in Southeast Asia. But compared with advanced industrial countries products