Zhejiang Hangyi Bicycle Manufacturing Co., Ltd. is one of its own bicycle suppliers. The company's business scope includes: general projects: bicycle manufacturing; bicycle and spare parts wholesale; bicycle and spare parts retail; moped manufacturing; electric bicycle sales; sporting goods and equipment retail Manufacture of maternal and infant products; sales of maternal and infant products; sales of electronic products; manufacturing of electronic components; retail of electronic components (except for items subject to approval according to law, independent business activities with business licenses), etc.
At the end of the 18th century, the French Sivrac invented the earliest bicycle. This earliest bicycle was made of wood. Its structure was relatively simple. It had neither a driving device nor a steering device. The cyclist relied on his feet to push the ground hard, and could only get off and move the bicycle when changing direction. Even so, when Sifrak rode this bike to the park for a ride, everyone present was quite surprised and admired. The first truly practical bicycles appeared in the early 19th century.
The impact of bicycles on people's lives: 1. It is much cheaper than cars and everyone can afford it. 2. The traffic is particularly busy during school and work hours. If more people choose to ride bicycles, there will be fewer cars on the street and it will not be so crowded. 3. Conducive to protecting the environment.
Disadvantages: It is easy to cause damage to the spine and lumbar spine. The upper tube of the car is longer and the shoulder hurts. The handlebar is lower and the neck hurts. When the body is straight, it will cause waist fatigue. Joint damage, long-term riding is easy to cause damage to the upper and back of the main knee. Injury of the upper limbs, the upper limbs are compressed for a long time, the blood circulation will be relatively reduced, and it is easy to cause the injuries of the upper limbs.
The bicycle supplier should note that the use of bicycles in daily life is very common. The birth and development of bicycles have been hundreds of years. There have been several major changes in the structure of bicycles during the development of bicycles. These changes have made the design of bicycles. In the development process, "the mountains and rivers are nowhere to be doubted, and there is another village in the dark." Every major change is a major breakthrough in the design of bicycles, and every major change has brought the development of bicycles into a new era.
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