自行年在美国日益受到重视和欢迎,迄今已成为美国仅次于走路运动及游泳的第三大最受喜欢运动项目,7岁以上年参加自行车运动人数达5460万。由于美国人骑车的目的大多是为了运动和娱乐,所以消费者对产品的要求也就特别严格,不但功能要多、精巧、实用,更要美观、安全。 In the United States, it has been increasingly valued and welcomed in the United States. So far it has become the third most popular sport in the United States, second only to walking and swimming, and the number of people participating in cycling more than 7 years old has reached 54.6 million. Since Americans mostly ride for the purpose of sports and entertainment, consumers are particularly demanding about their products. They must not only have more functions, are more sophisticated, more practical, but also must be beautiful and safe.