What role does the fence net play in protection?

With the continuous progress of society, fence nets have established a good protective image in people's minds. So where are fence nets used? What roles do they play? Let me briefly introduce them to you. There are many applications for fence nets, and we will introduce a few.
　　Fence nets, also known as protective nets or isolation nets, can be used as walls outside airports. They enclose the area to allow for orderly landings of aircraft and prevent pedestrians from entering or exiting the airport inappropriately, effectively establishing a wall. The typical size of airport fences is 1.8 meters by 3 meters, maintaining order in public places. Airport fences are cost-effective and easy to install. Fence nets, also known as road guardrails, are installed on both sides of roads for protection. Road guardrails are generally simple, made from welded mesh panels, prohibiting pedestrians from entering vehicle traffic areas to avoid inevitable dangers. This not only protects everyone but also prevents vandalism, making it a very good fence net product. Generally, the height of all fence nets is set at 1.8 meters or 2 meters, which is above the height of an average person. This is the function of protective nets and the value of fence nets.