According to national standards, safety helmets must be able to absorb an impact force of 4900N. When the human cervical spine is subjected to force, the maximum limit is about 4900N. Once this value is exceeded, the cervical spine is highly susceptible to injury, which can lead to paralysis in mild cases and even endanger life in severe cases. The national standard ABS V-shaped safety helmet undergoes strict quality control and impact testing during the design and manufacturing process to ensure that it can effectively absorb and disperse impact forces. When subjected to external impacts, most of the impact force can be buffered and transferred through the structural design of the cap shell and cap liner, thereby protecting the user's head safety.